Idukki Wildlife Sanctuary covers an area of 77 sq km in the Thodupuzha and Udumpanchola talukas of Idukki and occupies the forested area between the Cheruthoni and Periyar rivers. Idukki Wildlife Sanctuary is located at a distance of 40 kms from Thodupuzha. The great reservoir formed by the construction of the Idukki arch dam and dams at Cheruthoni and Kulamavu is a major tourist attraction. Lying at an altitude of 450 - 748m above sea level, the pristine forests and green hills around the area provide ample scope for trekking.

Besides wildlife viewing and trekking, one can enjoy boat cruises on the lake within the sanctuary, which offers a panoramic view of the surrounding areas. Wild Population of Idukki Wildlife Sanctuary includes Elephants, Bison, Sambhar, Deer, Wild Dogs, Jungle Cats, Tiger, Wild Boar etc. The avian population includes Jungle Fowl, Myna, Laughing Thrush, Black Bulbul, Peafowl, Woodpecker, Kingfisher etc.