Zepu Glacier (, , Zapu Gangri), is located in Yüxü Township, Bomê County, Tibet Autonomous Region, this 20 km-long Tertiary glacial remnant spans 90 km² within the Gangrigabu Range. As a maritime glacier, it terminates at 3,420 m elevation, forming the 9 km² Luobu Co moraine lake. The glacier exhibits layered ice structures dating to the Last Glacial Maximum, with visible ablation zones and lateral moraines exceeding 200 m height.
Geography.
Ecologically, it sustains alpine meadows and coniferous forests, hosting rare species like snow leopards (Panthera uncia) and Tibetan snowcocks (Tetraogallus tibetanus). Its meltwater feeds the Potong Zangbo River, a primary tributary of the Yarlung Tsangpo. Culturally significant to local Tibetan communities, the glacier is central to annual Kora rituals during the Saga Dawa festival, symbolizing purification in Bon traditions. Designated a national glacial research site in 2022, it receives limited tourism (≈1,200 visitors annually) with access restricted to scientific expeditions.