About Thangu Valley
Thangu Valley at 3,600m is the last inhabited valley before the Gurudongmar plateau — a narrow, remote basin where the road follows the Lachen Chu upstream through a landscape of willow scrub, prayer flags and the occasional army post. A handful of nomadic Lachenpa families live here, managing yak herds and a small seasonal tea house. The valley has an extraordinary quality of remoteness: the road ends your sense of the ordinary world rather abruptly here, and what replaces it is altitude, wind and big sky. Most travellers pass through in the half-dark on the way to Gurudongmar; stopping for tea at the tea house on the return, with the sun on the mountains behind you, is one of the better moments of the North Sikkim circuit.
Why go to Thangu Valley
Remotest inhabited valley in Sikkim
Three thousand six hundred metres and the end of the road you know. The Lachenpa families here are among the most traditional communities in Sikkim.
How to reach Thangu Valley from Lachen
On all Gurudongmar day trips from Lachen — passed through in both directions.
Best time to visit Thangu Valley
May–June and September–October. Closed to visitors November–April.
Time of dayReturn journey (9–11am) when the light is on the valley floor rather than against you.
Things we always tell our guests about Thangu Valley
- The seasonal tea house at Thangu serves basic chai and biscuits — worth a 20-minute stop on the return from Gurudongmar.
- Do not rush through — the valley deserves more than the 5 minutes most tours allocate.
Thangu Valley — your questions answered
Other places in Lachen
- Sacred LakeValleyMonasteryTrek