Kupup

Kupup is a hamlet in the Indian state of Sikkim near the border with China. It lies in a transverse valley below the Dongkya Range, close to the Jelep La pass. A nearby moraine ridge across the valley forms part of the watershed between the Teesta and Dichu river basins. To the southeast of the ridge is the lake Bitang Tso, also called the Elephant Lake or Kupup Lake, from which the Dichu river is conventionally believed to originate.

Beyond the valley of Dichu to the east is the Mount Gipmochi, which China claims as the trijunction between India, Bhutan and itself, but this is disputed by Bhutan and India. The Doka La pass, next to Gipmochi where India has a border outpost, is accessed from Kupup via a border road.