The Arch Dam of Idukki, Kerala, is the only Arch Dam in India. Cameras and cell phones are not allowed in the dam area. The Idukki Dam is built in the arch with the Kuravan Kurathi connecting the mountains. The Idukki Dam is one of the 22 highest dams in the world. The Idukki Dam is a major reservoir with the three dams of Idukki, Cheruthoni and Kulamavu. When the Idukki Dam is filled, the Cheruthoni Dam is released. The Cheruthoni Dam will have two shutters out of five shutters. Idukki Arch Dam is one of the most magnificent places to visit. The Idukki Arch Dam is one of the most unique structures in the world.