The book also includes facsimiles of 19 Buddhist paintings from the Library Cave, or Cave 17 of the Mogao Caves, that are housed overseas. Fan Jinshi, honorary director of the Dunhuang Academy ...

The oldest representational cave painting dates from about 30,000 years ago. Most date from 20,000 years ago or less, in what's called the Upper Paleolithic era. Rocks were ground up to make ...