Chumar (or Chumur) is a village and a border patrol facility located in south-eastern Ladakh, India. It is in Rupshu block, south of the Tso Moriri lake, on the bank of the Parang River (or Pare Chu), close to Ladakh's border with Tibet. Since 2012, China disputes the border in this area, though the Chumur village itself is undisputed.
Sino-Indian border dispute
Chumar has been one of the most active areas on the Line of Actual Control (LAC) in terms of interactions between Chinese and Indian troops. Located 190 km northwest of Zanda, it had long been an area of discomfort for the Chinese troops as, until 2014, Chumar had been one of the relatively few places along the Sino-Indian border where the Chinese had no roads near the LAC.
According to Phunchok Stobdan, "In Chumar, China probably wants a straight border from PT (point) 4925 to PT 5318 to bring the Tible-Mane area under its control", in essence removing the bulge along the LAC at Chumar. The Chinese opened up this new front of the border dispute in Chumar in 2012, prior to that, the border here was the International Border and not the Line of Actual Control.
As part of the resolution to the 2013 Depsang standoff, the Indian side agreed to take down some bunkers in Chumar in return for the Chinese withdrawing from the Depsang standoff area.
A road from Chumar leads up to the LAC. Along this road near the LAC, there is an Indian post at Point 30R, or known simply as 30R. 30R gets its name from being at a sharp elevation of 30 metres as compared to its surroundings. PLA patrols often come up to 30R. However they are at a tactical disadvantage since vehicles cannot come up to 30R; they have even tried using horses to enter the area. The Chinese have tried constructing a road across 30R, including in 2014 when they claimed they had orders to build a road till Tible, but they have been stopped from doing so by India. During the 2014 standoff here, Chinese troops had also positioned themselves on 30R, and had even heavy machinery with them for road construction. Chinese troops have also been reported to have removed Indian surveillance cameras from the area. The 2014 faceoff at Chumar, which started on 10 September, started days before President Xi visited India and continued even as he was in India. Indian media quoting army source said that nearly 1000 Chinese soldiers had entered Indian territory in the Chumur sector on the day Xi was in India.