It’s a place where the Gothama Buddha lived for a considerable period of time as mentioned in Tipitaka but the name has been changed several times over 3000+ years. Other places where the Gothama Buddha lived are Dolukanda/ Arankele, wasgomuwa, Budugala, Rajagala, Dimbulagala, Bambaragala, Isinbessagala, Buduruwagala, kuragala, etc, they’re all pabbatharama ( … pabbathe viharathi….).