Abstract
Tepe Betaki is one of the most known ancient area in Aleshtar and for the reason there were some studies about it from so yours ago. The primitive studies shows that there is cultural periods from prehistory periods to Islamic periods. In this connection to maintain of Tepe Betaki, the writer had mission to study to determine the limits of it. The surface analyzing was continued in this mound from 29 July to 11 August 2018. In the time, it was studied carefully and 17 trench 1/5×1/5 m were made in different directions during the surface analyzing. The purpose was to record the ancient cultural findings in different areas. For this purpose, the mound was divided to 5 zones North, West, South, east and central and each was studied carefully. The purpose was to separate different zones to record cultural findings and to recognize the different cultural material of the mound. Therefore, the analyzing of bronze era existence in Tepe Betaki and the mound studying to show the spreading cultural material of different zones are the samples of Bronze era were collected and studies typologically. These samples were selected from 330 samples. It means that only 22 tile samples were about Bronze era. Therefore, in spite of wide extent of Tape Betaki and enrichment of culture in the next period the Bronze era is not considerable. 
Keywords: Aleshtar, Tepe Betaki, Bronze Era, Ceramic, Typology.

Introdution
One of the main challenges of archaeology researchers always was to description of chronology study is chronology that exist during working in decades. Therefore, in fact the study which was done in this area was a part of a great archaeological project including trench in order to determine of limits. During the actions trench of the mound limitation 17 trench 1/5×1/5 m around the mound was performed. After studies and excavations, 330 tile samples were obtained which only 22 samples were about Bronze era. The collected tiles were categorized typologically. Therefore, the studying of Tepe Betaki in Bronze era in different phases of Godin III and spreading of Bronze era cultural material in different parts of the mound are the 3 km distance between Tepe Betaki and Tepe Gariran (the biggest mound in Aleshtar plain). The central position and surrounding theory is also studies.
In these areas, the archeological studies have been done in past decades. There were less archeological studies in Aleshtar in proportion to Nahavand and Kangavar. Orel Stine studies areas the first archaeological studies in this area (Stine, 1940). Davoud Davoudi had done survey and documentary is Aleshtar archaeological site in two periods in 2006 and 2007 (Davoudi, 2006, 2007). Clare Gaff archaeological excavations in Babajan Tepe are as the first in Norabad (Goff, 1969). He did some wide surveys in Lorestan in addition excavation in Babajan Tepe (Goff, 1971). Abbass Motarjem was excavation in autumn 2017 in Tepe Gariran. 

Geography and Topography of Tepe Betaki
Aleshtar is one of the 11 cities in Lorestan province which is located in North of Lorestan province. The central part includes wide plain called Aleshtar plain. Tepe Betaki is located in North – West of the plain and near a village by point is highest 1603 meter above sea level. The topography of the mound related to the mound high and around lands in North has more gradient and less in other sides. Tepe Betaki was recorded as national monument of Iran in 2 October 2011 (2011/10/2). 

Surface Studies Finding
Before, trenching group did a survey analyzing. It is important in some aspects:
- The study of cultural material dense in different parts of the mound.
- The study of cultural material in Tepe Betaki.
For this purpose, trenching group was divided into 5 groups. They began to study in 5 parts. The 5 parts were: South, East, North, West and center of this mound.

Bronze Era File Findings of Tepe Betaki
As said, 17 trench were done to determine the Tepe Betaki. From these trenches 16 trenches were about bronze era. The findings were obtained respectively one sample of T.T.A trench, one sample of T.T.D trench, two samples of T.T.F trench, five samples of T.T.G trench, five samples of T.T.G1, one sample of T.T.G2 and one sample of T.T.H. Besides tile findings of trench, six samples also were obtained in surface studying. Therefore, from excavated 17 trench and analyzing of 22 samples from survey were about Bronze era.

Conclusion
All the ceramic findings of surface analyzing and excavations were 330 samples which only 22 samples related to Bronze era. Bronze era ceramics of Tepe Betaki show that phases III:4 and III:2 are available. Meanwhile these two phases tiles are a few. In the period in Aleshtar plain, Tepe Gariran with 3 km distance from Tepe Betaki has 13 hectares and all kinds of Bronze era ceramics. Therefore, it seems that Tepe Betaki in Bronze era was surrounding settlement rather than Tepe Gariran. The surface monuments show cultural periods pre-history, history and Islamic periods. 41 samples of typology materials in surface analyzing in Tepe Betaki, 18 samples were related to pre-history period, 11 samples to Islamic and 6 samples to Bronze and 5 samples to Chalcolithic periods. Therefore, most of typology materials were related to history period and mostly Parthian period.