The Tangbula cave site is located in Longnai Village,Mengdong Town,Cangyuan Wa Autonomous County,Lincang Prefecture,Yunnan Province,in the basin of the Mengdong River,a tertiary tributary of the Lancang-Mekong River.The site was discovered in November 2018 during the survey of the"Canyuan Rock Paintings and Related Sites Archaeological Work Project"in Yunnan Province,and test excavations were carried out at the cave after revisiting the site in the following month.A total of 183 lithic artefacts were recovered from the site's surface and test excavation,all of which were chipped stone tools,including uniface,chopper-chopping tool,core,flake,flake tool,and hand hammer-grinder.Of these,the unifaces are Sumatraliths,typical of the Hoabinhian technocomplex in Southeast Asia.The raw materials are of a wide variety of lithologies,with granite,basalt,gneiss and quartz being most common.The cave is a typical Hoabinhian site and is the third Hoabinhian site to be discovered and reported in Cangyuan.As the stratigraphy of the site had been severely disturbed by modern human activity,no reliable absolute dating data has been obtained,but based on the technical-cultural attributes of its stone artefacts and comparisons with those of the same period in Southeast Asia,it can be dated to around the final Late Pleistocene to Early Holocene.
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