It is a small lake in an old volcanic crater located in the district of Savanne.
The name of Great Basin evokes a fervor by the Hindu population who makes a pilgrimage there every year. There is a temple dedicated to the glory of the god Shiva, the god Hanuman and the goddess Lakshmi. Once a year around February / March, on the occasion of the Maha Shivaratree, which means the night of Lord Shiva, thousands of pilgrims walk from their homes, back and forth, for a grand ceremony at Grand Basin.
The pilgrimage began in 1897 after a Hindu priest from Triolet (in the north of the country) dreamed of reflections from the waters of the Ganges. The statue of Shiva with its trident is a replica of that of Lake Sursagar in Vadodara located in western India.