The waves that created this giant stone amphitheater receded long ago. Now the highway sits between the ocean and this cave, about 2 miles north of Keaʻau Beach. Kahuna (priests) performed rituals inside the cave's inner chamber, which was the legendary abode of a vicious shark-man, a shapeshifter who lured human victims into the cave before devouring them. Hawaiians consider it a sacred place and won't enter the cave for fear that it's haunted by the spirits of deceased chiefs.
