This partial genetic continuity between the Paleolithic inhabitants and the contemporary Tibetan populations bridges the results and inferences from archaeology, history, and genetics.
The Tibetan Plateau is characteristic of most extreme environmental conditions, with high absolute elevation, low temperature, extreme aridity, and hypoxia.
One must concede that most of those genetic studies were hampered by either limited resolution of the classification tree (9, 11, 13), relatively small sample sizes (9–12), or, most importantly, potentially biased sampling coverage, in that most of the Tibetan samples came from the peripheral regions of Tibet, including Yunnan and Qinghai Provinces (9, 10, 12, 13) or from an undifferentiated “general population” (14).
Consequently, phylogeographic analyses performed on Tibetans were only rudimentary and proved largely inconclusive, as fine-scale founder types could not be identified.
Round, square, lotus, and pagoda-style buildings blend seamlessly into the beautiful and jagged landscape.