Silent Valley National Park is a protected area located in the Nilgiri Hills of Kerala, India. It is renowned for its rich biodiversity and untouched wilderness. The park is named after the absence of noise pollution in the area, providing a serene and tranquil environment for visitors.

Silent Valley National Park is situated in the Palakkad district of Kerala, in the southwestern part of India. It lies in the core area of the Western Ghats, a UNESCO World Heritage Site known for its exceptional biodiversity.

The park is home to a diverse range of flora and fauna. It houses numerous species of plants, including rare and endangered ones. The evergreen forests in Silent Valley are among the last remaining tracts of untouched rainforest in India. It is estimated that the park harbors over a thousand species of flowering plants, including several endemic and endangered ones.