An ancient link between Tibet and Siberia is evident from the inherited Denisovan gene that enables contemporary Tibetans to live comfortably at high altitudes despite thin air.   https://www.science.org/content/article/tibetans-inherited-high-altitude-gene-ancient-human   The Denisovans are an enigmatic archaic human species whose traces have first been found in Denisova Cave in the Altai mountains of Siberia.    But the most complete remains so far have been discovered  high on the Tibetan Plateau.   https://www.nature.com/articles/d41586-019-01395-0
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