Trekking Routes for Gangotri Gaumukh Tapovan Trek : Delhi - Haridwar - Rishikesh - Uttarkashi - Gangotri - Bhojwassa - Gomukh - Tapovan - Bhojwassa - Gangotri - Uttarkashi - Haridwar - Delhi The Holy River Ganges is the most sacred river in the Hindu religion and its source at Gomukh at the Gangotri glacier. The glacier measures about 30 kilometres long. The Gangotri glacier is surrounded by peaks belonging to the Gangotri Group of mountains, including some that pose a challenge to mountaineers , such as Shivling, Thalay Sagar, Meru, and Bhagirathi III. The glacier follows a N. Westerly route located below Chaukhamba mountain, the highest peak of the group. Gaumukh is one of the holiest places for Hindu pilgrims who come here to witness the birth of Mother Ganga. The trek takes one to Gomukh (cows mouth), the mythological source of the River Ganges, which is at the snout of the Gangotri glacier.