Silent Valley National Park, a tropical evergreen forest drained by the Kunthipuzha, was declared a national park

Background

The Kerala Forest Department records that Silent Valley National Park, located in the Nilgiri Hills, was declared a national park in 1985.
It is an expanse of tropical moist evergreen forest, and the Kunthipuzha River flows through its terrain.
Endangered fauna there include the lion-tailed macaque (Macaca silenus), the Nilgiri langur and the Malabar giant squirrel.
The area gained prominence in the 1970s, when environmentalists launched the “Save Silent Valley” movement, which halted a proposed hydroelectric project.
The park is part of the Western Ghats, a UNESCO World Heritage Site.