National Park with the wonderful name of "Silent Valley" is located in the Blue Mountains (Nilgiri Hills), who are in the state of Kerala in southern India.

There are several theories as to where the name area. According to one, it was called the "quiet", because there can not hear the usual for this area of ​​singing cicadas. And according to another theory, the name appeared due to the fact that the valley inhabited by a special kind of monkeys - Wander (lat. Macaca silenus, and English. «Silent» means "quiet, silence").

The first scientist who has turned his attention to the place, began in 1847, the British botanist Robert Ueyght. Thanks to him already in 1914, the valley acquired the status of protected area, which, however, did not prevent the authorities in 1928, flowing through this area the river Kunthipuzha install a small hydroelectric plant.

Today it is a unique place of over 237kv km, which is completely covered with tropical evergreen forests and has become home to a variety of mammals, birds and reptiles. Among the most common types can be distinguished lvinohvostyh macaques (Vander above), which are almost an endangered species. It is because of this kind of primates that are on the verge of extinction, and was formally established in 1980, the park, and in 1983 Prime Minister Indira Gandhi awarded him the status of a national.

Since 2001, around the park are waging a fierce controversy, as some officials want to deal with the development and expansion of the existing power plants in the park. What oppose conservationists and environmentalists, arguing that such an intervention into the ecosystem of the valley will lead to irreversible changes and lead to the death of Wonder and other inhabitants of the park.

However, in 2007 a project for the construction of the dam was approved.