Kurykan fortress wall
Ancient kurykan defensive wall is 185 meters long, its height reaches 1.5-2 meters in some places. The fortress has well-remained masonry, earth bank and also half-destroyed ditch of 3.5 meters wide and 1.5 meters deep. Hypothetically, such construction was build for temporary protection. However, during last time it is more believed that this construction could have been a cultural sanctuary. It is possible that stone walls and ditches protected sacral space from evil spirits, and flat stones with hollows were used as altar for human sacrifice. Such stone plates with well-noticeable dimples of round and cylindrical shape were found at Khorgoy cape. According to hypothesis of Okladnikov academician, kurykan people are ancestors of two siberian nationalities: Yakut and Buryat people.