Sikkim_expedition Notes Notes References Citations Bibliography Further reading External links Indian Road from Kalimpong to Kupup (close to Jelep La), OpenStreetMap, retrieved 5 July 2021. China's Azul Road from Jelep La to the Chumbi Valley, OpenStreetMap, retrieved 5 July 2021. Mountain passes of Sikkim Mountain passes of Tibet Mountain passes of China Mountain passes of India China–India border crossings Mountain passes of the Himalayas Yadong County Gangtok district