This vegetation rich park is relatively new as it got notified as a park only in 1978. This national park was established to protect the Nilgiri Tahr, an endangered specie of the wild goat and the only one to be found south of the Himalayas. The park lies along the high ranges of the western coast in the Munnar Forest Division of Idukki district in Kerala. It is situated on the border of Kerala and Tamil Nadu in the north where it is extends as the Annamalai National Park.