Gangotri is one of the four sites in the Chota Char Dham pilgrimage circuit. It is also the origin of the Ganges river and seat of the goddess Ganga. The river is called Bhagirathi at the source and acquires the name Ganga (the Ganges) from Devprayag onwards where it meets the Alaknanda. The origin of the holy river is at Gaumukh, set in the Gangotri Glacier, and is a 19 km trek from Gangotri. The original Gangotri Temple was built by the Nepalese general Amar Singh Thapa. The temple is closed from Diwali day every year and is reopened on Akshaya Tritiya. During this time, the idol of the goddess is kept at Mukhba village, near Harsil. Ritual duties of the temple are supervised by the Semwal family of pujaris. These pujaris hail from Mukhba village.