On the rocky outcrops close to pond knowns as Nelumpath Pokuna inside the Kumana National Park are a few stupas, now vandalised and destroyed by treasure hunters and some other ruins such as stone pillars, foundations and brick walls.
A jeep track exists upto Kiripokuna and rest of the path to Kiripokunahela is a 1.5 km trek through the elephant infested jungle. Kiripokuna is a canoe shaped natural pond about 4 meters long along a rock surface.
The extensive ruins at Bambaragasthalawa consist of several caves with drip ledges hewn on the brow of the entrance. According to a pre-christian cave inscription on one of the caves, its original name has been Nakapavatha. Therefore Nicholas has been concluded that this monastery is probably the Naga Pabbata Viharaya built by King Gotabhaya, ruler of the Rohana kingdom very early in the 2nd century BCE.
Bowattegala, a rock strewn mountain in the midst of Kumana, had been first fashioned a monastery in the third-second century BC ten noble Kshathriya brothers of Kataragama