Lake Basum Tso

Pagsum Co
View north-east from Tashi Island
Location	Gongbo'gyamda County
Coordinates	30°00′51″N 93°57′01″E / 30.01417°N 93.95028°E / 30.01417; 93.95028Coordinates: 30°00′51″N 93°57′01″E / 30.01417°N 93.95028°E / 30.01417; 93.95028
Basin countries	China
Max. length	18 km (11 mi)
Surface area	27 km2 (10 sq mi)
Max. depth	120 m (390 ft)
Surface elevation	3,700 m (12,100 ft)

Dragsum Tsho (tib.: brag gsum mtsho, Tibetan:བྲག་གསུམ་མཚོ་, Pagsum Co (Chinese: Bāsōng Cuò 八松错), literally meaning “three rocks” in Tibetan, is a lake covering 28 square kilometres in Gongbo'gyamda County, Nyingchi Prefecture of the Tibet Autonomous Region in China, approximately 300 km east of Lhasa in Tibet. At 3,700 metres over sea level it is about 18 km long and has an average width of approximately 1.5 kilometres. The deepest point of the green lake measures 120 metres. The lake is also known as Gongga Lake.