The Gaumukh Glacier is the source of the Holy Ganga and is therefore held in special regard by devout pilgrims. It is an 18-kilometre walk from the Gangotri Glacier. Measuring 8 kilometres by 24 kilometres, it is the source of the River Bhagirathi, which joins the Alaknanda River to form the Ganga at Devprayag, from where the river flows 2,480 kilometres into the Bay of Bengal, nourishing the life and culture of the Indo-Gangetic plain.
The place at which the Gangotri Glacier terminates is said to d Gaumukh (gau meaning cow, and mukh meaning face). About 18 kilometres from Gangotri lies Gaumukh, which is said to be the exact source of the River Bhagirathi.
Courtesy : UTDB