Hanauma Bay, Honolulu 1978

Hanauma Bay, in the southeastern corner of the island of Oahu, is the flooded crater, open to the ocean, of a volcanic tuff cone. Part of the Honolulu volcanics, the violent explosions which created Hanuma Bay began approx. 100,000 years ago. This image shows the side of the crater wall, coral reefs inside the crater, the popular white sand (brought in from outside) beach and cafes. Hanauma Bay was declared a marine sanctuary in 1967 and the rich coral reefs inside the crater now provide excellent snorkelling and scuba diving.