Grand Bassin is the most important hindu pilgrimage place on the island and outside India. It developed in the submerged volcano crater lake. The legend says that Shiva has dropped a droplet from Ganga river that he has forever kept on his head to protect world from floods to this particular crater. And why did Shiva go to Mauritius? He was awed by its beauty when flying over it, so he became curious what that beautiful place looks like and visited the island.