Hongshan culture
Dragons or dragon-like depictions have been found extensively in neolithic-period archaeological sites throughout China. Some of earliest depictions of dragons were found at Xinglongwa culture sites. Yangshao culture sites in Xi'an have produced clay pots with dragon motifs. A burial site Xishuipo in Puyang which is associated with the Yangshao culture shows a large dragon mosaic made out of clam shells. The Liangzhu culture also produced dragon-like patterns. The Hongshan culture sites in present-day Inner Mongolia produced jade dragon objects in the form of pig dragons which are the first 3-dimensional representations of Chinese dragons.