explaining iranian north-west kurgan's culture based on nir boyni yoghun castle excavation

one of the most important archeological remains in the eastern part of north-west iran is the existence of thousands of kurgan graves with a complex structure. despite the lack of concurrent residential sites, it can be concluded from the structure and contents of safely discovered graves that there was a kind of society with chiefdom structure which were able to build such magnificent mausoleums. their identity has not been illustrated up to now and their secrets have been obscured through the passing time. this paper explains the findings from one the kurgans in nir boyni yoghun castle and analyzes them through comparisons with some similar sites.