Established in 1984, the Shendurney Wildlife Sanctuary situated on either side of the Shendurney river is the only one in the Kollam district.. The sanctuary covers a total area of 250 sq kms and is acclaimed the world over for r its bio-diversity. The Parappar dam has been built across the Shendurney River and serves the purpose of irrigation in Kollam and Pathanamthitta districts. The lake covers a total area of 13.72 sq kms.

The mean temperature during summer is 35 degree centigrade and during winters it around 16 degree centigrade, with the annual rainfall is approximately 3200 mm. The terrain here is rugged with gentle to steep slopes ranging between 90m to 1550m. The tourist season is during the cooler months from October to March.