The bellstone is a pillar located in Kauai County, Hawaii near 'Opaeka'a Falls. It is so named because, when struck sharply, a note would resonate over a large area of Wailua Valley, warning of danger. Royal births were announced this way. Nearby is a view of 'Opaeka'a Falls.
U.S. Geological Survey Geographic Names Information System: Bell stone. Retrieved June 10, 2005. Coordinates: