A land-locked district, Idukki is one of the most nature-rich areas of Kerala. The Idukki Wildlife Sanctuary here spreads over an area of 105.364 sq km in the Thodupuzha and Udumpanchola taluks of the district. Situated at an altitude of 450-748 m above sea level, this sanctuary occupies the forest land between the Cheruthoni and Periyar rivers. There is a scenic lake around the sanctuary, covered by an enchanting canopy of tropical ever-green and deciduous trees, and offers boat rides.
Elephants, bison, sambar deer, wild dogs, jungle cats, tiger, wild boar etc. are seen here apart from various species of snakes including cobra, viper, kraits and numerous non-poisonous ones. Birds include grey jungle fowl, Malabar grey hornbill, several species of woodpeckers, bulbuls, flycatchers, etc. The wildlife here is similar to that of Thekkady. This sanctuary lies adjacent to the world renowned Idukki Arch Dam.