Probably identical with Rájáyatana cetiya in Nágadípa. Aggabodhi II. built for it the Unnalomaghara vihárá (C.xlii.62).
The cetiya was perhaps erected in honour of the Rájáyatana tree, which was brought by Samiddhisumana from Jetavana when he came with the Buddha to Ceylon (See Mhv.i.52, 57f).
It is said (DA.iii.899) that when the Buddha's religion disappears, all the relics of the Buddha in Ceylon will gather together at the Mahácetiya, proceed from there to the Rájáyatana cetiya in Nágadípa, and from there, finally, to the Bodhi tree.