Gurudongmar Lake is one of the highest lakes in the world and in India, located at an altitude of 5,430 m (17,800 ft), in the Indian state of Sikkim.It is considered sacred by Buddhists, Sikhs and Hindus.The lake is named after Guru Padmasambhava—also known as Guru Rinpoche—founder of Tibetan Buddhism, who visited in the 8th century.

Lachen is a town in North Sikkim district in the Indian state of Sikkim.It is located at an elevation of 2,750 metres. The name Lachen means “big pass”. The town is being promoted as a tourist destination by the Sikkimese government.

Lachung is a mountain village close to the Tibetan border, in the northeastern Indian state of Sikkim. It’s divided by the Lachung River. The village is home to the 19th-century Buddhist Lachung Monastery, surrounded by apple orchards. Nearby, the Yumthang Valley’s Shingba Rhododendron Sanctuary protects many species of rhododendron. The valley is also known for its waterfalls, pine forests and hot springs.

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 the North Sikkim district of Sikkim state in India. It is at an elevation of 3,564 metres (11,693 ft).