Nathula pass is a mountain pass that connects Sikkim with Tibet. Nathula pass served as an offshoot of the famous silk road until 1962 when Indo-China war broke out and since then the India-China border remained closed until 2006 when trade agreements between China and India were signed. China border is just a few kilometers from Nathula pass where both Indian and Chinese solders are deployed all year round. Nathula pass is at an altitude of 4310m above sea level and is one of the highest passes. Nathula pass can be reached from Gangtok in less then two hours by road as it is just 55Km from Gangtok.