Annual migration of Dowa village in Tibet

Aerial photo taken on March 6, 2021 shows an island on the frozen Puma Yumco Lake, southwest China's Tibet Autonomous Region. In the coldest time every year, at Dowa village, 5,070 meters above sea level, thousands of sheep are taken across frozen water to islands on Puma Yumco Lake, one of the world's highest lakes. Herders usually spend a month with the animals on the islands, where grass grows to waist height. When spring draws near, the herds of sheep will be taken back to their former habitat, by walking across the frozen lake again before the melting of the ice. Such herding practices have lasted for a thousand years at Dowa village. (Xinhua/Sun Fei)