evidence: Nelong Border Outpost (BoP), located at the height of 11,700 feet, is manned by the ITBP. Accompanied by ITBP director general, RK Pachnanda, the minister later visited Pulam Sumda (14,200 feet) and interacted with jawans and officers. The area is disputed by the Chinese only because Beijing refuses to adhere to the universally-accepted principle of "watershed" used for demarcating borders. In Nelang, the watershed in the area is located at Tsangchok pass, beyond Pulam Sumda. [...] Later he was scheduled to visit Pulam Sumdha (altitude 14,200 feet), Kopang (8,700 feet) and Bhairon Ghati (9,150 feet). Accompanied by ITBP director general (DG) R K Pachnanda, Singh interacted with jawans and officers of the ITBP.