Forty kilometres south-west of Vizag is this stunning Buddhist complex , better known by the name of its two hills, Bojjannakonda and Lingalakonda. Used by monks from the 1st to 9th centuries AD, the hills are covered with rock-cut caves, stupas, ruins of monastery structures, and reliefs of the Buddha that span the Theravada, Mahayana and Vajrayana periods. Bojjannakonda has a two-storey group of rock-cut caves flanked by dwarapalakas (door-keepers) and containing a stupa and gorgeous carvings of the Buddha (some restored). Atop the hill sit the ruins of a huge stupa and a monastery; you can still make out the individual cells where monks meditated. Lingalakonda is piled high with stupas, some of them enormous. Each hill requires some climbing and hiking – better to take in the spectacular views of palms and rice fields below.