Lake Tsongmo is a 2 hour drive from Gangtok and it would be wise to book a jeep or an SUV in advance. A round trip should cost you around Rs. 3000 and you should ideally leave early in the morning. Since this is a protected area, make sure you have a permit from your hotel, your travel agent or the Sikkim Tourism Information Center in Gangtok.
Things to do in Lake Tsongmo
1. Ride a yak and immerse yourself in the beauty of Lake Tsongmo and then go right up to Nathu La.
2. Beat the chill and hunger pangs by gorging on soupy maggi. And later, click a few hundred epic pictures by the lake.
3. At 7,200ft, visit the temple of Hanuman Tok, on your way back to Gangtok.