A Tibetan woman cleans Cordyceps at a market in Yushu, a county-level city of Yushu Tibetan Autonomous Prefecture in the southern part of Qinghai province on May 30, 2016. The city is at 3700m above sea level. Cordyceps, also known as Caterpillar Fungus, can sell for up to 90$ per gram. (Photo by Giulia Marchi/The Washington Post)
