The Yaoshan Site is characterized by an integrated structure of an altar and cemeteries, and the altar was built before the cemeteries. On the south, west and north sides of the altar, a number of stone levees formed by stacks of gravel were found, which were used as protection facilities for slope protection and soil consolidation during the construction and use of the altar. The top of the altar is square, facing north and south. From inside to outside, there are three structures: red soil platform, lime soil surrounding ditch and gravel surface. Among them, the lime soil surrounding ditch is filled with lime soil to form a color that is different from that of the inner and outer surfaces. Because of its regular shape, peculiar structure and large size, and its combination with the high-grade cemeteries in Liangzhu, where jade articles are the main burial objects, this site is considered an altar for holding major sacrificial activities.
