The Nathula merges the Indian state of Sikkim with China's Tibet Autonomous Region. The pass is situated, at 4,310 m above sea level, forms as a piece of a branch of the old Silk Road. Nathu signifies "listening ears" and La signifies "go" in Tibetan. On the Indian side, the pass is 54 km (34 mi) east of Gangtok, the capital of Indian state of Sikkim. Just natives of India can visit the pass, but only after successfull permit from the administration of Gangtok. Nathu La is one of the two open trading border posts in the middle of China and India.The others being Shipkila in Himachal Pradesh and Lipulekh in Nepal. Sealed by India after the 1962 Sino-Indian War, Nathu La was re-opened in 2006 after various trade understandings. The Chinese government is wanting to extend its rail administration to Yadong, barely a couple of kilometers from Nathu La.