A locality near Ambatthala. While seated here, Devānampiyatissa heard the novice Sumana announce the time for the teaching of the Dhamma, to be heard all over Sri Lanka (Mhv.xiv.36). Geiger (Mhv. Trs. 94, n.1) identifies it with the modern Nāgapokuṇa (but see Nāgasoṇḍi).
According to the Dīpavaṃsa (Dpv.xiv. 58; also Mhv.xvi.6) (which has a v.l. Nagaracatukka) it was a pond at the foot of the Missakapabbata and was made out of rock.