200-foot lava tube with 3 large rooms. One way in, one way out. The dive is set up with line & cylume sticks to follow. Inside the caves there are mole lobsters, ghost shrimp, Hawaiian lobsters, puffer fish and nudibranches. Outside the cave there are frogfish, Reticulated Butterfly fish & turtles. An excellent Hawaii diving classic upon request. Made only in calm seas. Another jewel of Kona diving.