Banasura Sagar Dam, which impounds the Karamanathodu tributary of the Kabini River, is part of the Indian Banasurasagar Project consisting of a dam and a canal project started in 1979. In the dam's reservoir there is a set of islands that were formed when the reservoir submerged the surrounding areas. The islands with the Banasura hills in the background provide a spectacular view. It is the largest earth dam in India and the second largest of its kind in Asia. The dam is made up of massive stacks of stones and boulders