Silent Valley is a World Heritage National Park.
Silent Valley is the most biodiverse national park.
The year Silent Valley was declared a National Park – 1984
District where Silent Valley is located - Palakkad
Year of Inauguration of Silent Valley National Park - September 7, 1985 (Rajiv Gandhi)
River flowing through Silent Valley - Kuntipuzha
The least polluted river in Kerala - Kuntipuzha
The river - Kuntipuzha - which was meant to start the Patrakadav project
River originating from Silent Valley - Thutapuzha
Located near Mannarkkad in Palakkad district, Silent Valley is the largest rain forest in Kerala.