Ranchamadama area has been shined out with the emergence of the collective cemetery which was racked out through excavations done in the lock of Land of Ranchamadama College. This land which belongs to Kolonna constituency is located in a 12 km distance from Ambilipitiya town. Ranchamadama is a mount collar that ablates to the valley from east border of the steep of Buluthota Mountain.
With the discovery in 2007, advertence of the entire world is focused on Ranchamadama area. The story saying that civilization has evolved from Aryans is also challenged with this excavation which is pioneered by Prof. Raj Somadeva of the Post Graduate Institute of Archaeology of Kelaniya University of Sri Lanka. During these excavations, the fact is uncovered that the ritual of cremation was inherited three thousand years back. Nine sepulchres with ash of dead have been discovered from the land of Ranchamadama College and through carbon 14 experiment done in India, Ranchamadama graveyard has been acquired a long history of 3368 years, which trace back to 1359 B.C. This is considered as the oldest cemetery in the island for now. Skeletons and charcoal which was used to cremate bodies have exposed in these charnelhouses. Thus, it has been proved with clear evidence that one of the most advanced civilizations in the world that have inherited the tradition of cremation and used graveyards existed in Sri Lanka 3,000 years ago.
Ranchamadama ancient cemetery significantly unfolds the nature friendly life-style of our ancestors. It is also uncovered that there was a code of rituals done on behalf of dead.
Moreover, stone-tools, clay pebbles and clay vessels have been discovered from this graveyard. This evidences the facts that an advanced civilization which has had the tradition of cremating the dead that belong to working class including farmers and laborers andritual practices in relation to cremation existed in Udawalawa, Galpaya, and Ranchamadama areas in Ratnapura District in the ancient history during 1359 B.C.