Abstract
The purpose of this research is preliminary studies and speculation on a shipwrecked ship off the coast of Talesh city in Gilan province related to the Qajar period. In this regard, field studies and sampling of various parts of the hull (wood, metals, water and soil inside and outside the hull) as well as microorganisms such as fungi and moss on the hull have been done. It is noteworthy that the samples were taken from both the open parts and the buried parts of the hull and the surrounding area. After that, the necessary analyzes were performed. The purpose of collecting and interpreting the data resulting from the analysis in this study is to provide a suitable solution for the protection, restoration and maintenance of this valuable historical monument to be considered at the national level and its location as a special tourist museum site. A region should be given priority and the heritage and cultural value of this work should be heard by foreign and domestic tourists. Therefore, the first step of this research has been field studies, speculations and necessary analyzes in the field of protection and restoration, which in the next stages should be considered by considering the appropriate conditions of maintenance and application of reconstruction processes with special protection instructions. And restoration, this ship should be formed in its original form and the lost parts should be restored. In this study, water samples inside and outside the ship were measured with a pH meter. After performing relevant analyzes, including spectroscopy of samples of wood textures of the hull, the presence of hydrocarbon compounds and petroleum derivatives (bitumen) has been determined from FTIR analysis. Other essential analyzes in this study are microbial tests taken from samples. Analyzing the results obtained from the cross section of the samples, this ship was Russian, which was used to transport petroleum products with a wooden structure made of Russian pine (coniferous leaf). In terms of antiquity and time, during the Qajar period and before that, for unknown reasons, it has blossomed on the shore of Ghorogh in the Talesh section of Gilan province.
Keywords: Russian Shipwreck, Qoroq Coastal, Talesh Region of Guilan Provence, Oil Derivatives, Russian Pine, FT-IR Analysis.

Introduction
The pinnacle of underwater archaeological advances is more related to the time when the Scuba: self-contained underwater breathing apparatus was invented. Figure 1 This discipline has revolutionized underwater, seas, and oceans and has yielded valuable achievements and discoveries (Dekker, David, 1889; Davis, 1955; Quick, 1970). Underwater archeology, especially the study of sunken and wrecked ships, is a field of archeology that has the most expertise in the study and exploration of sunken ships. Its techniques are a combination of archeological and diving techniques to become underwater archeology. Therefore, shipwrecks have sunk on some shores and can be discovered and studied as a valuable historical document (Mireskandari, 1379). Study and research with acquired information from historical shipwrecks with objects sunk on the shores or sunk in the seas and oceans themselves is the expressive language and image of the valuable history and civilizations of many centuries and in the processes and patterns of ancient trade, Transportation and migration bring rich information and also transfer culture, knowledge and civilization to future generations. In the past, human beings have been able to conquer the sea and oceans with the least facilities, and this has been a sign of the genius and continuous efforts of people in ancient times and times (Glisan, 1366; Mireskandari, 1379). Therefore, the study of the history of maritime trade and the structure of the historic ships of the Caspian Sea is a necessity that has not been seriously considered by researchers. In this study, the wood structure as well as the necessary analyzes for wood science and extraction materials as well as microbial tests and environmental factors on this ship were studied and with different technologies such as FT-IR and also with extraction processes with solvents. Organic on the internal samples of this shipwreck, useful results have been obtained, including the presence of petroleum derivatives in the internal parts of the hull. The processes of this research are used as basic studies in order to use the best scientific methods and principles in the next stages for its protection, restoration and implementation of technical maintenance operations.

Material and Method
For initial investigations, ambient humidity and ambient temperature were measured at several points with a data logger to analyze the effect of ambient humidity on damage to the ship’s structure and hull for additional studies. At first, with the necessary inspection and visit to the site, the damages that were visible in the structure and appearance of the work were identified, which include the following: 1- Change in the appearance and texture of the wood used; 2- Corrosion of the surface of the metal (mainly nails) iron ones) used for connections and fastenings; 3- Change in color, shape and texture of the covering and strengthening material of the used wood; 4- Burning of wooden surfaces on the southwest side due to lighting a fire on the side of the ship; 5- Fracture and the lack of parts of the ship’s skeleton in some parts of it; 6- Growth of microorganisms and moss cover on a part of the wooden surfaces that were exposed to stagnant moisture; 7- Accumulation of cement tissue around metal joints and fasteners and its homogenization with joints; 8- The inadequacy of the environmental conditions of the ship’s structure, including humidity and temperature in the parts buried in the sand and the outer parts of the ship; 9- The wear of the wooden surfaces of the outer body of the ship due to the movement of sand particles through the wind can be mentioned. For preliminary investigations, ambient humidity and ambient temperature were measured at several points with a data logger device in order to analyze the impact of ambient humidity on the damage caused to the structure and hull of the ship for further studies. By drying the wood specimen of the ship’s hull to prepare the microtome, the work steps were performed according to the working method and cross sections were prepared from the samples. Russia. Also, Microbial tests with moss and mold on wood and microorganisms have been performed in the microbial environment. The results obtained from the microbial tests of the Bio-microbiology Laboratory are as follows. Necessary analyzes have been performed on wooden samples of ship hull with FTIR to check the structure of wooden structures and effective materials.

Results and Discussion
The identified fungi are Aspergillus niger (Aspergillus niger), Aspergillus flavus and Aspergillus fumigatus (Aspergillus fumigatus) that is worth mentioning that due to the coverage of the entire surface of the plate by Aspergillus fungus, it is possible that some fungi in the environment that have a lower growth rate were not grown and isolated on the subrodextrose agar culture medium. The results of the identification of bacteria grown on nutrient agar medium are Bacillus, Pseudomonas, Flavobacterium, Staphylococcus and Arthrobacter.
Bacteria and fungi lead to the deterioration of wooden works through the production of cellulose and lignin decomposing enzymes in the structure of wood. In this study, all the fungal species identified belonged to the genus Aspergillus. This genus of fungi, which includes more than 300 different species, can be found on a large scale all over the world in different environments, including soil, and they multiply quickly in the right conditions, including access to humidity and the right temperature. The production of different enzymes, including cellulase, by different types of Aspergillus species has been proven, hence the isolation of this group of fungi on wooden works indicates their high potential in destroying organic compounds in wood. On the other hand, it should be noted that due to the high growth power of Aspergillus fungus that quickly covers the entire surface of the culture medium, it was not possible to identify and isolate other possible fungi in the environment.
All the bacterial genera isolated in this study are among the bacteria that are abundantly found in various surveys of environmental samples, including soil, therefore, the isolation of these bacterial genera in this study is not far from the mind. The production of extracellular cellulase enzyme has been proven by some of this group of bacteria, including Bacillus, Pseudomonas, and Flavobacterium. It is worth mentioning that the isolation of the relevant bacteria from wood is the reason for the production of 100% cellulose or lignin decomposing enzymes by them, but in an environment with a high microbial population, microbes can use the organic substances released in the environment by the enzymes extracellular produced by other microorganisms to use for growth and reproduction. In total, the culture results of the relevant samples indicate high bacterial and fungal contamination, which often have a high potential to produce enzymes and substances that damage the structure of wood. 

Conclusion
According to the results obtained from various analyzes, including FT-IR results from samples extracted from the hull of a historic ship in the Ghoroq area of Talesh city in Guilan province, due to its high antiquity and its historical and cultural value in the region in different dimensions Including tourism can be very important, so scientific studies for its protection and reconstruction are among the topics that are currently left on the beach without any protection operations and have been exposed to a variety of natural and unnatural damage. These studies are the source of a suitable solution for following the necessary protection and repair instructions. Therefore, in the beginning of these activities, recognizing the injuries and providing a solution is essential. Through field research and analysis of samples, the wooden structure of the hull was made of coniferous wood from Russia and its use has been active in the transportation of goods, including petroleum derivatives. With the analyzed samples of the in-ship jute texture in FT-IR spectroscopy, most of the parts show the wood texture, but some samples show the presence of hydrocarbon compounds that mainly constitute the structure of kerosene. Therefore, considering that the structure of the main timber of the ship’s hull, in addition to being saturated with water, is full of oil compounds, so it needs special protection and restoration operations to perform the best reconstruction and restoration on these valuable historical monuments. The commercial, economic and cultural history will chart a new path for future economic activities and also serve as a professional tourism center for domestic visitors and foreign tourists.

Acknowledgments 
The cooperation of Mr. Abdulmajid Naderi from the oceanographic research institute in the area of the Qoruq ship in Talash city of Gilan province in field studies and sampling is greatly appreciated. Appreciation is given to the respected Research Assistant of the Cultural Heritage Research Institute who always provide the necessary assistance in the direction of research. We would like to thank the dear experts of the Cultural Heritage Research Institute for the necessary assistance for the analyses. We sincerely thank Mrs. Sahar Nouhi for her help in FT-IR spectroscopy, Dr. Nasreen Nouhi Babajan for the microbial analysis of the samples, and Mrs. Irfan Menesh for her cooperation in the extraction process.
The Authors gratefully acknowledge the support of Research Institute of Cultural Heritage & Tourism, Tehran, Iran. It should also be noted that this program is with license 98102964 on 9/24/2018 with the financial support of the Ports and Maritime Organization and with the participation of the Research Institute of Oceanography and Atmospheric Sciences, by the Research Institute of Cultural Heritage and Tourism of the country
 

Abstract
Liarsang-bon ancient complex is located in Shirchak village, Rankuh section of Amlash city of Gilan province. This cemetery is located on the eastern side of the ancient complex of Liarsang-bon and at the foot of Mount Ahinbartaleh. Over 100 graves were identified and excavated in this cemetery. Based on the results of radiocarbon dating, the longevity of this cemetery has been determined simultaneously with the Parthian and Sassanid periods between the years 38 BC-123 AD and 45 BC-80 AD. The purpose of this study was to study the structure of Parthian burials in Liarsang-bon Cemetery. What has justified the necessity of the present study; Documenting and disseminating the most important achievements of the excavation is in recognizing the burial structures of the Parthian period in this region, and it is also an attempt to document the results of the excavations before the destruction of the site by natural and human factors. The authors tried to answer the following questions in the present article: What burial structures were most considered by the activists of the time in Lyarsang-bun Cemetery? Another is that these burial structures are comparable to which all-day burial structures in the region and outside the region? The result is that among the various burial methods in the Parthian era, only three types of crypts, pits and jars were identified in Liarsang-bun cemetery, which are the frequency of crypts, pits and finally jars, respectively. O indicates the variety of burials in this cemetery, which, while similar to regional burials, is reminiscent of and similar to trans-regional examples. The data of this study have been collected through information obtained from six chapters of field excavations in Liarsang-bon Cemetery and have been evaluated historically by historical descriptive analysis as well as comparison with other similar cemeteries.
Keywords: Guilan, Amlash, Cemetery, Liarsang-Bon, Parthian.

Introduction
During the six excavation seasons of Liarsang-Bon ancient cemetery between 2014, 2016, 2017, 2018 ,2019, and 2021 under the supervision of Vali Jahani a total of 130 graves were identified and excavated. In a number of pit graves and crypts, two burials have been performed simultaneously (Jahani, 2014; 2015; 2016; 2017; 2018; 2021). Based on the results of radiocarbon dating, which was extracted from the dentine collagen of two burials during the excavation of 2016 and 2017, the date of this cemetery coincides with the Parthian period between 123-38 BC and 80-45 BC. (Soltysiak & Jahani, 2019: 49). It is worth mentioning that cultural works similar to Sasanian period art have also been identified from some graves in this cemetery. It seems that this ancient site was used as a cemetery from the Parthian era to the early Islamic period. The result of five seasons of excavation of the ancient cemetery of Liarsang-Bon, many grave goods including all kinds of clay, metal and glass containers, iron and bronze weapons, personal items and accessories and a diverse number of ornaments including various types of beads, pendants, rings, bracelets, Earrings, brooches and medallions are made of various materials such as glass paste, glass, bronze, silver, gold and natural bitumen. In this research, the authors have tried to chronologically examine the frequency of burial structures and grave goods and compare these structures with contemporary examples in nearby and distant sites. Research data; It is the result of five chapters of field research in Liarsang-Bon cemetery that the authors have tried to evaluate these data by the method of historical description analysis as well as comparison with other cemeteries of the same horizon in terms of history. In the Parthian era, due to the multiplicity of religions, we see diverse and numerous ways of burial (Mohammadifar, 2014: 48). Traditionally, burial methods in this 475-year period have been considered as follows: burial in clay and stone coffins; Pithos burials; pit graves; Cellar Burials; basement graves; Well graves and temple graves.

Burial methods in Liarsang-Bon cemetery
We wrote before that about 130 graves attributable to the Parthian and Sasanian periods were excavated in this cemetery. These excavated graves have presented three types of grave structures, which included Cellar Burials, pit graves, and pit graves. Along with the dead, burial gifts such as glass, clay and metal containers (lead, bronze, gold-plated silver, etc.), metal weapons such as swords, daggers, knives and bayonets, decorative beads, bronze ornaments and seals were found. 

Cellar Burials
Among the burial methods of Liarsang-Bon cemetery, Cellar Burials have had the highest frequency. Tombs with a catacomb structure and similar to Liarsang-Bon in areas such as Khorramrud (Egami et al., 1966:4-8), Hosni Mahaleh (Sono and Fukai, 1968:27-30) located in Dilman, Vestemin area in Kiasar, Sari city (Sharifi, 2014) and also in the sites located in the steppes of southeastern Europe, Central Asia, and North Caucasus, which contain the cultural materials of the Sarmatian, Scythian, and Alani peoples. (For example, see: Moshkova, 1983: 24).

Pit Burials
The number of pit graves excavated in Liarsang-Bon cemetery is almost equal to the number of Cellar Burials. These graves were found in most of the Parthian sites, and the reasons for their creation and use are different in each site.

Pithos- Burials
14 Pithos burials for the burial of children and young people were found in the area of Liarsang-Bon. There are evidences of burials in clay Pithos in Gilan at the same time as the Parthian period, from sites such as Dilaman Qal-e Kuti (Sono and Fukai, 1968:38) and Kaloraz (Khalatbari, 2005: 35-40), Germi (Kambakhshfard, 1967) and Cheshmeh Sar Cemetery of Persepolis (Schmidt, 1953: 117-160), and Valiran Damavand cemetery (Nemati and Sadraei, 2012: 110) has been reported.

Discussion and analysis
Liarsang-Bon cemetery in Amlash region, due to its location at an important point between Marlik and Kaloraz cemeteries in the Iron Age, as well as the continuation of the burial traditions of other contemporary cemeteries such as Qal-e Kuti and Hosni Mahaleh, can indicate the total prevalence and all the methods of Burials as well as homogeneous cultures were in progress in this region from the end of the Iron Age to the end of the Sassanid period (Jahani and Babayev, 2017: 58-59). This homogeneity in the structure of graves, including Cellar Burials, which was seen in large numbers in Liarsang-Bon cemetery, was previously also observed in regional cemeteries such as Khorramrud (Egami et al., 1966: 4-8), Hosni Mohaleh cemetery (Sono and Fukai, 1968:27-30) Westmin Kiasar cemetery (Sharifi, 2014) was observed. Also, structures known as catacombs were identified in the discovered extra-regional graves, including in areas of the south and southwest of Iran, which, as a rule, due to the influence of the climate on the process of building tombs and burials, the differences between these two parts of Iran’s geography in terms of burial structures in the Parthian era, it should be assumed.
 Regarding the origin of this method of burial in the Parthian era, in addition to the cultures within the administrative geography of the Parthian era and its relatively rich background, attention is also paid to the Indo-Iranian and Indo-European peoples of the steppes of Central Asia to the northern parts of Europe (Zadenprovsky, 1997: 327 -340). The number of Cellar Burials and pit graves can be cautiously attributed to a relatively bipolar society. Economic and social conditions and the time of burial (including the urgency of battle, looting, unexpected natural disasters such as floods, earthquakes, etc.) have also been influential in creating such a burial style. Based on the type of grave goods, this type of graves has been attributed to the Parthian period to the beginning of the Sassanid period (Jahani, 2017-2021).

Conclusion
As a result of the field research conducted in Liarsang-Bon area, graves including crypt, simple pit and Pithos types were identified in the cemetery section. The absolute chronology and typology researches conducted on the grave goods from these graves show the artistic features of the Parthian and early Sasanian periods. Most of the graves are dug in the east-west direction and the bodies are often buried on the left side. Most of the burials obtained from these graves are of the squatting type and most of the bodies are on the left side. Simple pit graves and Cellar Burials have the largest number of burial structures. Burial structures known as crypts as well as their grave goods are similar to the samples discovered in the northern region of Iran, such as in Khorramroud, Westmin Kiasar and Hosni Mahaleh cemetery, and also with areas of the south and southwest of Iran and even the northern steppes in Europe is also comparable. Pit graves can also be compared with other similar burials of the Parthian era in general and only through grave goods. Graves with a Pithos structure in Liarsang-Bon cemetery are comparable to other similar burials that were identified in several cemeteries of the Parthian period, such as Sang Shir Hamadan, Germi Moghan, Cheshme Sar, Persepolis. In this way, with caution and according to the amount of data and the analysis of the four Styles tombs resulting from the excavation of the Liarsang-Bon cemetery, the burial culture related to the Parthian era and the period after that, i.e. the Sassanid era; It indicates a two-way and even direct connection with different regions, including the lands located in the northern regions of Iran and more remote lands in the south and west, which has led to the expansion of diverse burial cultures, which pay attention to the climatic conditions, customs and traditions as well reflects.