Ganga Talao (commonly known as Grand Bassin) is a crater lake situated in a secluded mountain area in the district of Savanne, deep in the heart of Mauritius. It is about 550 m (1,800 ft) above sea level. The first group of pilgrims who went to Ganga Talao were from the village of Triolet and it was led by Pandit Giri Gossayne from Terre Rouge in 1898.

It is considered the most sacred Hindu place in Mauritius

The Shiv Mandir is located on the bank of the lake and is dedicated to Lord Shiva. There are temples dedicated to other Gods including Lord Hanuman, Goddess Ganga, and Lord Ganesh along the Grand Bassin. During Shivaratri, many pilgrims in Mauritius walk bare feet from their homes to the lake.