The Nagarjunsagar-Srisailam Tiger Reserve, which is spread over Nalgonda and Mahabubnagar is the largest Tiger reserve in the country. This Tiger Reserve covers a total area of about 3,568 square kms. Srisailam’s temples and reservoirs are the major attraction for thousands of tourists and pilgrims visiting the holy town.
The Nagarjunsagar-Srisailam Tiger Sanctuary was declared officially in the year 1978 and has been recognized by the Project Tiger in the year 1983. This Reserve has been renamed as the Rajiv Gandhi Wildlife Sanctuary in the year 1992. The reserve is known for its breath taking scenic beauty. Situated in the deciduous Nallamala forests, the mystifying landscape of the lofty hills and echoing valleys, exciting winding roads, perennial rivers, is this most charismatic world of the wild cats. It is a true wild paradise. The mighty River Krishna which rising in Sahyadri Hills and makes its way through Maharashtra and Karnataka flows across Nallamala tiger reserve. The best time to visit the Nagarjunsagar-Srisailam Tiger Reserve between the months of October to June.