evidence: China, India border dispute: deadlock over pulling back troops from key Himalayan pass - New Delhi rejected Beijing’s demand that it pull back thousands of reserve troops and weaponry it brought to the Depsang Plains and other areas - India does not want to move them too far back as they are acclimatised to the altitude. Sources say this setback raises the prospect for another tense winter [...] The Depsang Plains is split by the Line of Actual Control – a disputed but de facto boundary between India and China that runs along the Himalayas – and had previously been patrolled by both Indian and Chinese troops. China last year positioned troops at key locations in the plains, denying India access to 300 square kilometres (116 square miles) of land ever since, the people said.