Abstract
Varamin-Pishva plain is one of the most important cultural areas of the southeastern part of Tehran plateau in different historical periods. Taghabad Tepe with two western and eastern elevations and consisting of different rich layers of Iron and Bronze Age is located in this plain. This site has been studied and archeological research in 1397. In this study, it was found that this area has different deposits from the Iron Age one and two in the upper layers and traces of late bronze in the lower layers along the horizon with the common western traditions on the plateau. The aim of this study was to analyze the mentioned findings and compare it with the findings of other areas of Varamin plain and other neighboring areas. The questions of this research are as follows: based on the archaeological findings of the cultural developments of Taghiabad Tepe, what kind of cultural traditions dose the Iron Age have? What is the influence of regional and trans-regional cultures of the common Iron Age cultures of Varamin plain due to the Taghabad findings in the type of pottery and architecture? Accordingly, the Iron Age 1and2 of Varamin plain and especially Taghiabad Tepe to some extent shows the regional actions in Varamin plain and the proximity and convergence of the trans-cultural region with neighboring areas. 
Keywords: Iron Age, Varamin-Pishva Plain, Iron Age Settlements, Taghiabad Tepe, Architecture, Pottery.

Introduction
Varamin-Pishva plain, having a suitable geographical position in the slopes of Alborz mountain range and Damavand peak and having a suitable height, has provided suitable ecological conditions for the presence of human communities for a long time. This plain is one of the areas prone to the formation of Iton Age settlements in the north-central part of Iranian plateau. During the archaeological study of this area in 1391-1392 AH. Has identified 27 sites belonging to the Iron Age (Figure1), as a result of studding the findings of this study, only a few sites have been introduced and identified. In this research to analyze and study the pattern of establishment and distribution of sites as well as cultural stages of the Iron Age of Varamin plain by analyzing cultural findings identified from  Iron Age sites based on archaeological studies and cultural traditions of this plain by case study, especially pottery, and the architecture identified from workshop A in the eastern ridge of Taghiabad area as well as the surface findings obtained, classified and then the location of this area in Varamin-Pishva plain next to the Iron Age settlements in the center of Iranian plateau, in a general view, reviewed, evaluation and analysis are included. In this review, understanding the Iron Age communities, especially the Varamin plain will be accompanied by re-reading various theories.

Research Method
The present research is structurally one of the basic researches with a comparative-analytical approach, the method of finding is to exploit the findings of an archaeological excavation chapter based on historical analysis of the findings of Taghibad Tepe. According to the research topic and the variables studied in it, the method of collecting information in the field and data collection tool in this research will be based on archaeological excavations and related reports and articles. 

Taghiabad Tepe
Taghiabad area is located in Javadabad rural district and between Taghiabad villages, Khajoo Qaleh and Ajorbast counties in the agricultural lands of Taghiabad village in Varamin city. This site was considered in the framework of joint cooperation between the Institute and the University of Berlin in 1397 AH to collect samples of ancient climate studies from ancient deposits and according to the surface findings of the Iron Age and Bronze Age and according to the situation. The demolition of the site was speculated. The site is located in the west and near the Ali Kharat River. Cultural and settelement findings of this research have been identified in Taghiabad Tepe from workshop A in the ridge No1 of Taghiabad Tepe (eastern ridge) and in the northern side of this Tepe in the area that was excavated with an area of 1/5×2 meters (Figure5). From this Tepe, seven settlement phases with two historical periods from Locus have been identified, which include artifacts from the Iron Age 2 and 1 to the late Bronze Age. The cultural materials of this Tepe are all kind of pottery covered with red, cream and brown mud, gray, architecture (walls and thermal structures) plaster, pounded floor, stone tools such as pounding stone, abrasive stone , burnt plant seeds (in terms of appearance similar to wheat or barley) it has formed a bony specimen, goat horn and clay tokens, etc., which will be described below

Conclusion
The results of the study of Varamin plain settlements from its archaeological of Iron Age communities, based on Taghiabad Tepe excavation, this area and site as an important area and indicators in the study of Iron Age cultures and chronology of the Iranian plateau. One of the most important topics in the archeology of the Iranian plateau is how the tradition from the Bronze Age to the Iron Age and its sequence, one of the important features of Taghiabad Tepe is the presence of communities from the Iron Age and their cultural connection with the Bronze Age which is of great importance in the studies of the tradition from the Bronze Age to Iron (Age)., an area where settlement began in the Iron Age and continued until the Bronze Age . Accordingly, in this study, questions were raised that can be evaluated in this way. The first question was asked about archaeological findings, cultural developments of Taghiabad Tepe and how the cultural traditions of the Iron Age. The urban complex and evolution of later cultures with cultural establishment has been one of the actions of the neighboring horizon in the type of architecture and pottery, especially Gholi Darvish. The second question was asked about the interactions and influence of regional and supra-regional cultures of the common cultures of the Iron Age of Varamin plain due to Taghiabad findings in the type of pottery and architecture, which according to the surface findings of 27 sites recorded in studies, archaeological as well as various excavations in Sofalin Tepe, Chalnasian and other areas, this plain to some extent shows intra-regional activities with the center of Taghiabad Tepe, with cultural trans-regional affinity and convergence with adjacent areas in the southern and northern parts of the central plateau of Iran. Therefore, it can be considered that the Iron Age sites of Varamin-Pishva plain, especially Taghiabad Tepe, are the product of an advanced society with a cultural establishment of adjacent horizon actions in the type of “architecture” and “pottery”. Based on the types of pottery and the type of architecture the cultural sequence of Taghiabad Tepe can be introduced with 7 phases of establishment in two historical monuments. Finally, it can be said that based on the relative and comparative dating of Taghiabad Tepe, it can be dated to the late bronze period of the transition period and the Iron Age of one and two.
pe. 

Abstract
Abstract: In the last two decades, as a result of the significant increase in archaeological field activities in Iraqi Kurdistan, some important sites and artifacts from the Sassanid period have been discovered. Even though during the Sassanid period, the northern region of Mesopotamia was considered a part of the Sassanid Empire, many archaeological features of this region in the Sassanid period have remained unknown. In this research, which was carried out using a library method, we have studied 42 ancient sites or monuments in Iraqi Kurdistan belonging to the Sassanid period, which have mainly been identified in recent years. This research aims to find an answer to some questions about the location of the Sassanid settlements in the region and the geographical and environmental factors affecting their formation. The Sassanid remnants of Iraqi Kurdistan include settlements, monuments, government complexes, fortifications, water channels, cemeteries, and the local production centers of textiles and pottery. The results of this research show that Sassanid settlements in Iraqi Kurdistan have mainly concentrated in three areas: 1. Shahrizur plain and the area around Dukan Lake 2. Erbil plain, 3. Garmian region. These areas, which are in the form of open plains and vast inter-mountain valleys, had importance in the Sassanid period due to having characteristics such as suitable height, abundant water sources, fertile soil, and being located on the important communication routes and therefore they were as a place for the formation of the settlements in the mentioned period.
Keywords: Iraqi Kurdistan, Northern Mesopotamia, Sasanian Period, Archaeological Settlements.

Introduction
The four-hundred-year Sassanid period is considered one of the important periods in the history of Iran and the Middle East. The northern region of Iraq, which is today known as the Kurdistan region, was considered one of the main parts of the Sasanian Empire. On the other hand, it was important politically and geopolitically due to its proximity to the Sassanid capital of Ctesiphon and its location between the Sassanid center and the Eastern Roman territory. Although historical sources provide a relatively clearer view of the northern region of Iraq in the Sassanid period, the archaeological evidence of the Sasanian period in Iraqi Kurdistan has not been significant until recent decades.
In the past two decades, a large number of historical and prehistoric sites in the mentioned region have been surveyed or excavated, among which a number are related to the Sassanid period. Identification of these sites and monuments can lead to better knowledge about the economic, political and social situation of the region during the Sassanid Empire.

Materials and Methods
One of the goals of this research is to investigate the Sassanid settlements of Iraqi Kurdistan based on the results of archaeological surveys and excavations. Some of the questions that this research seeks to answer are: 1. What are the most important settlements of the Sassanid period in Iraqi Kurdistan and how were they distributed?
2. Which areas in northern Iraq, had the greatest importance in terms of quantity and quality of Sassanid settlements? 3. What are the most important geographical and environmental factors involved in the formation of Sassanid settlements in Iraqi Kurdistan?

Data
Based on the distribution of Sassanid sites in Iraqi Kurdistan, this area has been divided into three parts including eastern, southern, and western parts:
Region 1: including the eastern part of Iraqi Kurdistan, which mainly includes the present-day Sulaymaniyah province, stretches from north to the Lake of Dukan and Darband Ranieh, from east to the border of Iran and Iraq, from west to the east bank of the little Zab river, and from the south to the end of the Shahrizur plain. The Sassanid sites of this region are:
Murad Rasu, Qalatga Darband, Usu Aska, Gerd-i Bazar, Merquly, Tell Sitak, Girdi Rostam, and the sites of Shahrizur plain including Gerd-i Kazhaw, Bestansur, SSP 4, Tell Begum, Gird-I Qalrakh, Sutik Tape, Bakr Awa
Region 2: Southern part of Iraqi Kurdistan (Garmian). The Sassanid sites of this region are:
Bazyan Palace, Girdi Qala, Paikuli, Sasanid palace of Paikuli, Qalai Gawri, SRP 9, SRP10, Irrigation canal of Kalar, Kani Masi/ Tell Majid, Gawr Tepe, Top Askar cemetery, Hawsh Kori
Region 3: Western part of Iraqi Kurdistan includes Erbil and Dohuk provinces. The Sassanid sites of this region are:
Tell Amiyan, Canal A of the village of Kawr Gosk, Erbil city, Qasr Shemamok, Tell Khazana/Khazna, site no. 31, Baqrta, Satu Qala, sites n.3, 8, 4, 22, 24, 25, 27&28 in Erbil plain

Discussion
The geographical and environmental factors affecting the distribution of Sasanian sites in Iraqi Kurdistan are:
1. Topography: The results of this research, which are reflected in Fig. 12, indicate that in total, about 76% of Sasanian sites of Iraqi Kurdistan are mainly located in the mountainous plains, and only a handful of the sites are located in the mountainous and high places outside of the plains.
2. Height above sea level: Most of the Sassanid settlements in Iraqi Kurdistan are located at an altitude of less than 600 m, and only a few sites are located at an altitude of more than 1000 m (Fig. 12). The lowest areas are located in the Garmian region, i.e. in the Sirvan river valley and the Kalar plain, which is mostly less than 300 m above sea level.
3. Access to water sources: All the Sasanian sites in the Kurdistan region are located near permanent water sources, the most important of which are Great Zab, Little Zab, and Sirvan. In addition to that, a significant number of sites are located next to permanent springs or smaller rivers, such as Shalar River in Penjwen, Wadi Shatwan and Tanjero in Shahrizur Plain, Tavuq cay in Chamchamal Plain and Shiwazor and Chai Siwasor in Erbil Plain. 

Access to Fertile Soil
The plains of Shahrizur, Erbil, and Garmian, where the largest number of Sasanian settlements are located, also have the most fertile soil in the region for agriculture (Yasin, 2014: 240).

Proximity to Communication Ways
Most of the Sassanid sites in Iraqi Kurdistan are located in the plains that were on the path of important commercial and political roads between southern Mesopotamia and the Sassanid capital on one hand with the land of Azerbaijan and the Iranian plateau in the east on other hand and the land of Eastern Rome, Asia Minor and Syria in the north and northwest on another hand. The existence of the Paikuli tower and some other important sites in the Sirvan river valley indicate the importance of this communication route.

The Extent of Sassanid Settlements
Most of the Sassanid sites in Iraqi Kurdistan are less than five hectares in size, which are considered small settlements. Therefore, we can see a significant difference between the extent of the Sasanian sites in the north and south of Mesopotamia. 

Conclusion
In this research, we have studied 42 sites or monuments of the Sassanid period in Iraqi Kurdistan, which were mainly discovered in the last two decades as a result of archaeological excavations or surveys. Some of the mentioned sites, such as Gerd-i Bazar, Gerd-i Kazhaw, Gird-i Qalrakh, Girdi Qala, Paikuli, Top-Askar, and Hawsh Kori, can be considered important sites of the Sasanian period in Iraqi Kurdistan. These sites contain information about memorial buildings (Paikuli), government complexes (Hawsh Kori), fortifications (Merquly, Gerd-i Kazhaw, SRP 9), water canals (Kawr Gosk, Kalar), Burial methods (Gerd-i Bazar, Top Askar), beliefs, economy and local centers for production textile (Gird-i Qalrakh), pottery and other livelihood aspects in Iraqi Kurdistan during the Sassanid period.
The result of this research shows that most Sassanid settlements in Iraqi Kurdistan are located in low-altitude and mid-mountain plains such as Shahrizur plain, Sirvan river valley, and Erbil plain. Among the advantages of these plains, we can point out access to permanent water sources, fertile soil, and location on the important communication routes that connect the west of Iran to the south of Turkey and east of Syria. In general, although most of the Sassanid sites discussed in this article lost their importance and were abandoned in the following periods, the plains where these sites were located, due to having ideal conditions and Geographical and environmental factors are still the main centers for urban settlements in the Kurdistan region.

Abstract
Prior to L. Afshari’s fieldwork in Ramhormoz, the known Achaemenid sites from the plain only amounted to 17 in number. Yet, given factors such as favorable climate and fertile soil for agriculture, existence of important rivers such as Kupal and Sandali, proximity to such trade routes as the Susa-Persepolis royal road as well as to the two major Achaemenid capitals of Susa and Persepolis, we deemed the figure to be rather underrated, believing that there must be much more concomitant settlements in this plain. During our investigation, the sites recorded by the previous team were re-visited and new coeval sites were also identified. The survey of 2020, directed by one of the authors (L. Afshari), did not encompass the entire Ramhormoz plain. Covering only its middle part straddling the Ala River with a total area of about 53000 hectares (530 sq. k), the survey recorded 36 Achaemenid settlements. Identification of the relevant sites was based on Khuzestan’s local pottery of the Achaemenid period reported from Tape Daroughe. In this study, the impact of geographical factors such as the presence of large rivers and fertile lands on the genesis and prosperity of settlements was evaluated. The surface architectural finds are suggestive of interactions between rural and nomadic communities. Results of the surveys indicated the proximity to ancient royal roads and access to water sources and pastures to be the determining factors in the distribution pattern of Achaemenid settlements over the Ramhormoz plain. This survey program aimed to identify and locate the Achaemenid sites in the Ramhormoz plain, to examine their interrelations, to record their characteristics through sampling and observing pottery pieces, to establish a relative chronology for them based on the typology of surface pottery collections, and final to draw cross-regional typological comparisons with major sites in other parts of Iran, South Mesopotamia, and East Anatolia.
Keywords: Southwest Iran, Khuzestan, Ramhormoz Plain, Settlements, Achaemenid Period.

Introduction
The vast region of Ramhormoz stretches up to the mountain belt of Khuzestan to the north. Sitting in the eastern Khuzestan plain at an elevation above sea level of 120 m, the plain of Ramhormoz encompasses a total area of 620 sq. km. All across southwestern Iran, Ramhormoz is the region with the least archaeological investigation. Despite this paucity of work, recent studies have demonstrated the regional settlements (in both mountains and plains) to be integral to any understanding of the culture of the Achaemenid period. Geographic location of the region, the nature of settlements in the transition zone between plains and mountains, and their continuity and cultural ties with each other also furnish a pattern for grasping the Achaemenid world’s settlement policy. In addition, given its strategic location during the concerned period, the plain assumed a central role in the interactions between Iran, Mesopotamia and Anatolia. It is of great importance also because of its location on the Royal Road from Susa to Persepolis.
The southwestern region of Iran played an important role in establishing cultural, economic, and political interactions with surrounding areas such as Mesopotamia and Anatolia throughout the 1st millennium BC. The number of archaeological studies conducted in the Ramhormoz area has been quite limited. Despite the lack of archaeological information, the studies carried out in recent years have shown the significant role the cultures in the region (both the mountain and plain settlers) played in understanding the Achaemenid Culture.
The significance of the region was further revealed with the surface surveys carried out by Donald Mc Cown in the region and the excavations he conducted at Tol-e Geser (McCown, 1949, 1954). Surveys conducted by Wright and Carter in 1969 also pointed to connections between the region’s lowland and mountainous parts of southwestern Iran (Wright and Carter, 2003). Although the dimensions are different, it has been observed that the settlements share some common features with the mountainous parts of Persian geography. As a result of contemporary archaeological resources and the survey conducted under my supervision, the characteristics of the Achaemenid settlements in the Ramhormoz plain in Southwest Iran were reanalyzed. The influence of geographical factors such as the presence of large rivers and fertile lands on the formation and prosperity of the settlements and the relations between sedentary, rural, and nomadic communities were studied. Also, the transformations in the settlement system, distribution, and population differences during the Achaemenid period were revealed and subsequently / mapped.

Discussion
This survey program aimed to identify and locate the Achaemenid sites in the Ramhormoz plain, to examine their interrelations, to record their characteristics through sampling and observing pottery pieces, to establish a relative chronology for them based on the typology of surface pottery collections, and final to draw cross-regional typological comparisons with major sites in other parts of Iran, South Mesopotamia, and East Anatolia. The realization of the latter aim will have important implications for the Achaemenid archeology of southwestern Iran, altering the existing views. In light of our findings, it is possible to propose a distribution pattern for the settlements in the middle of the Ramhormoz plain as being clustered in two regions, viz. northwest and southeast, on both banks of the Ala River. The finds of primary importance from the settlements of the plain are pottery assemblages. To explore the Achaemenid pottery, they were first classified by shape, which consisted of the five groups of carinated bowls, bowls with a spherical body and a simple rim, necked jars, short-necked jars, and storage jars. This was followed by comparative studies for dating the pottery. Our observations show that the Achaemenid pottery traditions continued well into the subsequent period after the demise of the empire.
Thus, it is notable here that the materials and settlements discussed in this paper can potentially extend in date to as late as a century after the Achaemenid period. In terms of technical characteristics, the pottery splits into five groups: common, light green-slipped, red-slipped, eggshell, and painted wares.
Drawing on historical sources and archeological findings as well as the conducted studies, the villages across the plain tend to be clustered around or be related to the Susa-Persepolis trade route. The rich geography of the plain has informed the dynamics of its settlements over time. Notwithstanding the severe disturbances induced by modern settlements and agricultural and industrial activities, the identified settlement centers reveal direct or indirect link with the commercial or military routes of the Achaemenid times. In other words, their formation along the commercial routes was primarily meant to facilitate intra- and cross-regional contacts. The proximity of settlements to the royal road between Susa and Persepolis evinces the integral role the road played in the cultural interactions of the Achaemenid period. Therefore, archaeological studies directed by Esmail Yaghmai are important in detecting the remains of settlements along the royal road linking Susa to Persepolis as they reveal the characteristics of the settlement policy. 

Conclusion
With the completion of the archaeological investigation in the Ramhormoz plain and the study of the findings and data obtained from this investigation, it seems that a general understanding of the cultural remains related to the Achaemenid period and the distribution of the sites of this period can be achieved to some extent. It was thus revealed that proximity to commercial roads and access to water resources and pasture were the main determinants in the distribution model of Achaemenid settlements. Rich pastures for nomads, the potential for irrigated agriculture for settlers, and access to communication routes provided advantages for both lifestyles. Therefore, the settlement pattern is more associated with roads. When the location of the settlements and their distance to each other are examined, it is seen that the frequency of settlements on the Susa-Persepolis Royal Road is very high. Settlements are located on the road within short distances of each other, which shows that the road is a determining factor on settlements in the region due to its socio-economic advantages.
Ramhormoz plain shows that the Achaemenid settlements in this plain maintained strong intra- and cross-regional cultural and economic ties. In terms of extent, Tol-e Ishan Seyyed Shabib or Tol-e Toupi, Tape Mava, Tape Mehr Alnesa and Tape Kheyr Alnesa appear to be examples of such type of villages. With respect to the location of settlements and their distance from each other, a concentration of settlements is discernible along the Royal Rod—they are clustered along this road at close intervals. This fact indicates that routs played a decisives role in the formation of regional settlements, and that the Royal Road yielded multiple economic and political advantages. In general, it is possible to say that most of the settlements in the Ramhormoz plain lie on the riparian areas or along the Royal Road from Susa to Persepolis, and judging by the pottery collections, there clearly were close interrelations between these settlements and interactions with neighboring regions. On this very basis, one may safely surmise that a local and highly advanced pottery industry prevailed in the plain during the Achaemenid period. Cross-comparisons of the surface pottery assemblages from the Ramhormoz plain with the excavated material from sites in southwestern Iran, southern Mesopotamia and eastern Anatolia indicate the presence of early, mid- and late Achaemenid ceramics, suggesting that the Achaemenid cultural horizon continued uninterruptedly over the plain between 330‒550 BC.

Abstract
In recent decades, our knowledge about the Parthian period has increased significantly thanks to the valuable field researches mainly in the form of archaeological surveys. The target area of this research, Abbar and Darram districts, in Tarom Olia of Zanjan province, is also one of the areas where no information was available about its condition in the Parthian period. This research study 12 Parthian sites of the area, in order to answer questions such as the quality and quantity of settlements, The influence of climatic and environmental factors on the formation of sites, the characteristics of cultural materials and especially the typology of pottery, the differences and commonalities with the surrounding areas and the reconstruction of the historical and cultural image of the region in the Parthian period. The Parthian sites of the region were studied based on factors such as height, land slope, soil quality, and access to water sources and communication routes. Studying of Parthian potteries, including three groups of decorated, common and fillide, indicate that the pottery tradition of the region, in addition to having local characteristics, was influenced by the pottery traditions of the north, northwest and West of Iran, which indicates inter-regional connections and the role of Tarom region as a bridge between different parts of North-West Iran. The Parthian settlements were mainly formed near permanent water sources such as Ghezel-Ozan River and in low-slope, low-altitude and fertile lands. Due to the hydrological condition of the Tarom Valley and the abundance of water resources, all the Parthian sites access to sufficient water. According to the settlement pattern, it seems that the majority of the population of the area had a livelihood based on agriculture and gardening, in which the Darram Castle with an area of about 20 hectares played a key role in the area.
Keywords: Tarom Olia, Abbar, Darram, Archaeological Survey, Parthian Settlements.

Introduction
Zanjan province has long been one of the important areas for the formation of human sites in the northwestern part of Iran’s plateau due to its climatic conditions and geographical location as a communication corridor between the central plateau and the northwest of Iran. Tarom County, located in the northernmost part of Zanjan province, has the potential for the formation and relative development of human settlements. A season of archaeological survey in the area of Abbar and Darram in Upper Tarom County identified 12 Parthian sites based mainly on the typology of pottery, including Pavehrud, Dam, Foqlake 1, Foqlake 2, Emamzadeh, Vaznehsar, Darram, Oghlanqalasi, Govarqale 1, Govarqale 2, Govarqale 3, and Kuhkan Olya. This research, conducted through field and library studies, aims to investigate the Parthian sites in the region, exploring questions about the quantity and quality of Parthian sites, the influence of climatic and environmental factors on their formation, the typology of cultural materials (mainly pottery), and their differences and commonalities with surrounding areas. The Parthian pottery from the studied sites can be classified into three groups: decorated pottery, plain pottery, and Fillide pottery.

Environmental effects on formation of the Tarom Parthian sites
1. Water sources: In the Tarom region, along with the permanent flow of the Qezel-Uzan River, there are rich underground water sources, such as wells, canals, springs, tributaries, seasonal rivers, and channels, providing favorable conditions for the formation of human societies. In the studied area, nine sites are located less than 500 meters from rivers like Sherfan-Rud, Abbar, Nokian, Qeshlaq-Rud, and Vaznehsar, while two sites are situated less than 10 meters from Qezel-Uzan itself. Due to the hydrological conditions of the valley and the abundance of water sources, all sites in Abbar and Darram had access to sufficient water and were located near permanent water sources.
2. Hypsometry: The Parthian settlements in this area are located at different heights above sea level. Oghlanqalasi, at an altitude of 408 meters, and Dam, at an altitude of 1288 meters, are the lowest and highest Parthian sites in the study area, respectively. Overall, the Parthian sites in the region can be categorized into two groups based on altitude: those below 700 meters and those above 900 meters. There are 9 Parthian sites (75%) below 700 meters and only three sites (25%) above 900 meters. The first group is situated in valleys between mountains near rivers, while the second group is located on highland slopes.
3. Land slope: There appears to be a direct correlation between the elevation of Parthian sites in Abbar and Darram and the slope of the land. All nine Parthian sites in Abbar and Darram below 700 meters have slopes of less than 10 degrees, indicating that 75% of the sites are on low slopes and altitudes. Among the sites in Abbar and Darram, only 3 sites (25%) between 900 and 1300 meters have relatively steep slopes of 20 to 30 degrees. The slopes of the sites vary in direction, mainly north to south and west to east, highlighting the importance of sunlight in the formation of Parthian settlements in Abbar and Darram.
4. Land use: All Parthian sites below 700 meters with slopes less than 10% have fertile soil suitable for agriculture. The largest lowland and alluvial lands in the survey area are located on the northern edge of Qezel-Uzan, in the eastern and northwestern parts of Darram Castle. These lands have good access to water from the Siah Rud River to the north and the Ghezel Uzan River to the west.
5. Communication ways: Due to the topography of the area, communication routes have remained relatively unchanged over different periods, limited to inter-mountain valleys along rivers. The Parthian sites in this region are mainly aligned in a northwest-southeast direction along Qezel-Uzan or in valleys of sub-rivers perpendicular to the Qezel-Uzan River valley. The main modern communication road in the region follows a similar route along Qezl-Ozen. The proximity of Parthian sites to modern roads suggests that ancient roads likely followed a similar path.

Conclusion
In total, the sites located at an altitude of less than 700 meters, with an average size of 3.3 hectares, have good conditions for agricultural and horticultural activities due to easy access to water sources, good soil, and suitable slope. Additionally, sites located at a height of more than 900 meters above sea level, with an average area of 0.79 hectares, are situated in the middle of valleys and on sloping surfaces near tributary rivers, with rich pastures and water resources, making them favorable for animal husbandry activities. Moreover, the size and density of Parthian sites in the lower areas are much greater than in the higher areas. Considering that the size and density of the sites indicate the population living in the region, it appears from the results of our study that the dominant population of Abbar and Darram in the Parthian period had a subsistence economy based on agriculture and horticulture.
Among the identified Parthian sites, the site of Darram Castle, with an area of about 20 hectares, is a massive fortification structure on the northern bank of Qezel-Uzan. Given some features of Darram Castle such as its large size, fortification, easy access to permanent water sources, and access to agricultural land, it seems that Darram Castle played a key role throughout the study region in the last centuries of the Parthian period. The results of the study indicate that the pottery tradition in the region, in addition to being influenced by internal and local factors, was influenced by neighboring regions in the north, northwest, and west of Iran.

Abstract
One of the facts that can be seen in the archaeological contexts of the late Bronze Age in the abandonment or excessive reduction of the enclosures. At the end of the Bronze Age, many sites and settlements in the Iranian Plateau and outside the Iranian Plateau collapsed suddenly and unexpectedly, or the growing process of these societies has stopped. Researchers have considered several factor such as floods, earthquakes, immigration of newly arrived ethnic groups, etc. for this event, to these factors we can also add the effect of factors such as over urbanization, which has not been addressed much. As a result of over urbanization, challenges such as; Regional thermal changes, destruction of habitat and biodiversity and ecosystem as accelerating factors in the crises of this period could further worsen the situation. The result of this research show that after the increase in population in urban centers due to the lack of administrative planning to control the conditions caused by dense urbanization and as a result the disruption on environmental order and natural balance, the society has tried to restore the natural conditions as a stable system this attempt to return to the balance has been manifested in various ways, such as the decision to leave large settlements and move to peripheral and peripheral areas with sufficient food and water resources. The evidence of this event can be seen in areas such as Merv, Northern and Southern Balkh, and Doab areas in eastern Sind; in some cases, the crisis in the societies has increased and it has appeared in the form of newer problems such as famine and epidemics, inter regional conflicts and such things, which have led to the collapse of societies.
Keywords: Bronze Age crisis, Late Bronze, Over Urbanization, Eastern Iran, The Decline of Settlements and Civilization. 

Introduction
Over urbanization or excessive urbanization is generally used in cases where the urban population has grown unplanned and beyond the capacity of the environment and city administration, which causes the transformation and sometimes degeneration of urban communities (see Sovani, 1964). Therefore, the increase in the number of the population and the lack of environmental resources in the administration and organization of the urban population could act as a factor to disrupt the path of the Bronze Age societies. The decline of settlements and civilizations at the end of the Bronze Age is very important, and the first major collapses of the prehistoric era took place at this time, which occurred widely and in large areas of the old land. The Bronze Age in the archaeological literature refers to a period when societies gradually more from rural to more complex or urban and create trans-regional connections. Obviously, what is expected is the continuation of the development and progress of societies towards the emergence of larger and more complex civilization and states, which reached their peak of prosperity during the middle Bronze Age (see Tosi, 1976: 168). But what happened in the late Bronze Age is the abandonment of sites and depopulation of a large number of them, which can be seen as a chronological break in many Ancient sites? The evidence indicates an event during which large settlements such as Shahr-I Sokhta (Tosi, 1968). Mohenjodaro (Wheeler, 1968), Harappa (Wheeler, 1968), Altin Tepe (Masson, 1981), collapsed, although some small settlements such as Tekem Tepe (Kohl, 1984) continued to exist without any interruption. The concentration of population in urban areas and the impossibility of providing in frastructure needs in urban life due to the occurrence of over urbanization had led to disorder in social structures and population decline in Mohenjodaro and Harappa settlements. If the elites of the society do not manage or solve the problems caused by excessive urbanization, difficult conditions will arise and the society will probably solve the problem or become a problem in the form of a self-organizing system. The evidence shows that in some settlements such as Mohenjodaro, Harappa and Altin Tepe, people decided to leave the large settlements and settled in peripheral areas, and this caused the settlements to become uninhabited in the late Bronze Age. 

Identified Traces
Urbanization, which was actually a cultural and social revolution, appeared sometime between the end of the fourth millennium and the beginning of the third millennium bc in western Asia, Egypt and Mesopotamia (Childe, 2019:1). But at the end of the Bronze Age in a wide area of the east, especially the southeast region of Iran and even beyond the current borders of Iran, such as; Central Asia and the Indus valley, many large settlements such as Shahr-I Sokhta (Tosi, 1968), Tepe Hesar (Schmidt, 1937; Dyson, 1989), Namazga (Kohl, 1981) area have declined and shrunk excessively. There are several theories about the crisis of the late Bronze Age, such as the invasion of the Aryan tribes (Girshman, 1954), disease (Robbins Schug et al., 2013), famine and earthquakes (Nur, 2009), etc., but since this discussion is about societies with an advanced level of technology and in constant relations with are their peripheral areas. The factor of excessive urbanization can be added to the above. Rapid urban growth will have consequences for the urban society. Such as the lack and absence of drinking water, urban heat island effects, unpredictable rainfalls, and increasing demand due to population growth cause environ mental destruction and air pollution. For example, in the Indus valley in period IIIC, due to extra-regional trade and large inward migrations, the previous organized settlement pattern was disrupted. The houses in the main areas of the city were thrown into the streets and then at the end of the Harappan phase, the population density decreased and some of them were concentrated in the main areas of the city and the other part moved to the east. In Turkmenistan, even though the archaeological data indicates a decrease in the Kopedagh area, no settlements are abandoned in Atak and other areas, especially Merv and Balkh.

Conclusion
In general, based on archaeological findings, the cities were formed from the old Bronze Age and reached their peak of prosperity during the middle Bronze Age. But at the end of the third millennium and the beginning of the second millennium B.C. the evidence indicates that the sites were excessively shrunk and empty of inhabitants, or the collapse of large settlements. This could have been caused by over urbanization on the basis that whenever the society’s population grows beyond the environmental resources and facilities necessary to organize people, it can create crises for urban societies. Crises such as; the increase in urban rainfall and temperature, the increase in urban waste, the lack of drinking water sources and the destruction of the environment for human well-being in large societies with high population. With the increase of urban population and the lack of resources to organize people it leads to an increase in crime, marginalization and disorder in urban organization, and when the political rulers cannot solve or manage the created problems, the people of the society left the cities and went to the marginal and peripheral areas with stable food and water resources, such as Merv, Northern and Southern Balkh, to continue their lives.