A land-locked district, Idukki is a majestic canopy of tropical evergreen and deciduous forests. Situated at an altitude of 450-748 mt above sea level, this sanctuary occupies the forestland between Cheruthoni and Periyar Rivers. Spreading over 77 sq. km, the Idduki Wildlife Sanctuary extends over the Thodupuzha and Udumpanchola taluks of Idukki district. The Idukki Reservoir wrought by three dams - Cheruthoni, Idukki and Kulamavu - spreads to 33 sq km.

An attractive lake embraces the sanctuary along its three sides, thus offering opportunities for adventurous boat-rides and a panoramic view to the tourists. A wide variety of wild animals like elephants, bisons, bear, wild boars, sambar wild dogs, jungle cats, tiger, etc populate the sanctuary. Various species of snakes including cobra, viper, kraits, numerous non-poisonous ones and birds like jungle fowl, myna, black bulbul, peafowl, woodpecker, kingfisher etc. can be find in this sanctuary. Other residents are here..
a) Animals: Elephant, bison, sambar deer, wild dog, jungle cat, tiger, wild boar etc.
b) Snakes: Cobra, viper, krait and a number of non poisonous snakes.
c) Birds: Jungle fowl, myna, laughing thrush, black bulbul, peafowl, woodpecker, kingfisher etc.