As to the origin of the technology of ridged-hammer bipolar flaking in the Three Gorges Region, it is supposed to come from the drainage basin of Yuanshui in Hunan Province.

• 从石片形态特征和技术来源分析,该技术来自湖南沅水流域,是在全新世早期,外来技术与当地特殊的地质生态资源结合的产物。