Shimao

Shimao (Chinese: 石峁; pinyin: Shímǎo) is a Neolithic site in Shenmu County, Shaanxi, China. The site in located in the northern part of the Loess Plateau, on the southern edge of the Ordos Desert. It is dated to around 2000 BC, near the end of the Longshan period, and is the largest known walled site of that period in China, at 400 ha.

The city was surrounded by inner and outer stone walls, in contrast to the rammed earth walls typical of Longshan sites in the Central Plain and Shandong. The walls were 2.5 meters thick on average, with perimeters of approximately 4200 m and 5700 m respectively, and feature gates, turrets and watch towers. The inner city contained a stone-walled platform, interpreted as a palatial complex, and densely packed residential zones, cemeteries and craft workshops. Unusual features include jade embedded in the city walls, possibly to provide spiritual protection, and paintings of geometrical patterns on the inner walls. Many human skulls were found under the city gate, suggesting ritual sacrifices during construction.