Nagarjunsagar Srisailam Tiger Reserve is The Largest Tiger Reserve in India spread across 5 districts of Andhra Pradesh and Telungana states. The last count in 1989, puts the number of Tigers inside the Nagarjunsagar Srisailam Tiger Reserve as 94.
Nagarjunsagar Srisailam Tiger Reserve is spread across 3,568 square kilometers in the following 5 districts; Nalgonda, Mahbubnagar, Kurnool, Prakasam and Guntur. National Tiger Conservation Authority has declared the Nagarjunsagar-Srisailam Tiger Reserve as a Project Tiger Reserve in 1983, a project to save Indian’s National animal, the Royal Bengal Tigers. The Tiger reserve was renamed as ‘Rajiv Gandhi Wildlife Sanctuary‘ in 1992.
Nagarjunsagar-Srisailam Tiger Reserve or Nagarjuna tiger reserve as it is called locally, has many historic places. Ruins of the ancient Nagarjuna Viswa Vidyalayam, started by the great Buddhist scholar, Nagarjunacharya of 2nd century, is found inside the Tiger reserve. Fort ruins of Ikshwaku Chandragupta, a third century ruler is also found inside the Tiger reserve. Fort ruins of king Pratap Rudra and other rulers are found on the banks of River Krishna, inside this tiger reserve. Ruins of the wall with a length of 169 kilometers, built during the Kakateeyas is seen here. There are many cave temples and rock shelters in the tiger reserve.
Sri Mallikarjuna Swamy Temple, one among the 12 Jyotirlinga temples dedicated to Lord Shiva, is situated at Srisailam, on the banks of the River Krishna. Nagarjuna Sagar Dam and Reservoir is situated inside the Nagarjunsagar Srisailam Tiger Reserve, at a distance of 150 kilometers from Hyderabad in the border areas of Guntur district of Andhra Pradesh state and Nalgonda district of Telungana state. Nagarjuna Sagar Reservoir is the second biggest water reservoir in India.