Harsil is a village and a cantonment area on the banks of the Bhagirathi River, on the way to the Hindu pilgrimage, Gangotri, in Uttarkashi district of the Indian state of Uttarakhand ).
Situated at a height of 7,860 ft (2,620 metres.) from sea level, Harsil lies 73 km. from Uttarkashi, and 30 km away from Harsil lies the Gangotri National Park, spread over 1,553 square km.
elhi-Hardwar-Harsil Ridge (DHHR), the basement ridge is a northerly extension of the Aravalli Mountain Belt, which also trends in a NNE-SSW direction and stretches from Amba Mata-Deri (Gujarat-Rajasthan) to Delhi via Ajmer and Jaipur.
The idol of the Hindu River Goddess Ganga (Ganges) is brought down from the shrine at Gangotri in the upper Himalayas after Diwali and kept at 'Mukhba' village near Harsil. It remains there throughout the winter when Gangotri is snowbound and inaccessible.