The Yumthang Valley or Sikkim Valley of Flowers sanctuary, is a nature sanctuary with river, hot springs, yaks and grazing pasture on rolling meadows surrounded by the Himalayan mountains in Yumthang in the Mangan district of Sikkim state in India.

[4] A tributary of the river Teesta flows past the valley and the town of Lachung, the nearest inhabited centre.

During the summer months, villagers take their cattle to these heights to graze (a practice known as yaylag pastoralism).

[6][7] Tourists may travel from Gangtok to Lachung (the nearest village where accommodation is available) by booking a full vehicle or shared one and stay over night.

A direct journey to Yumthang is not feasible as roads are commonly foggy and it becomes dark very early around 5:30 pm.