乃堆拉山口
The Chinese government is planning to extend its rail service to Yadong, a few kilometers (miles) from Nathu La. India had been planning an extension of rail services from Sevoke in Darjeeling district to Sikkim's capital Gangtok, from Nathu La. however the broad gauge line has been shortened to a 45 km extension to Rangpo, due for 2022 completion.