Mannarkkad, formerly known as Mannarghat, is a town in the Palakkad district of Kerala State, South India . It is the headquarters of Mannarkkad Taluk, and is one of the largest revenue Taluks in Kerala. It is situated 40 km north-east of the Palakkad district, on the way to Kozhikode (NH 213) and in the foothills of the Western Ghats. Silent Valley (a tropical evergreen rain forest with an unbroken evolutionary history of 50 million years) is only 35 km from Mannarkkad.