Tibet is situated on the Tibet Plateau, which includes parts of neighboring Chinese provinces Qinghai, Sichuan, Gansu and Yunnan. These areas used to be part of Tibet until Chinese rule.

Topographic map of the Tibetan Plateau. Major rifts in south-central Tibet are labeled. The arrow indicates the Indian plate motion. The circles are intermediate-depth earthquakes (>=70 km ...

What remained unclear was the route Ekai Kawaguchi (1866-1945) took to enter Tibet, tucked deep in the mountains and closed to foreigners, at a time when no decent map was available. Now ...