From the legendary tale of King Roymata, dive the mysterious 'Underworld caverns that purportedly led from Devil's Point to Hat island.

Located on the western most point of Efate's mainland, the tunnels and caverns of Tukutuku have been formed by the erosion of coral limestone during lower sea-levels. Despite the proximity to the shoreline, it's a stunning dive simply because of the amazing system of tunnels and swim-throughs. Most of the reef in the aerial photos is honeycombed with caverns. Illuminated by shafts of sunlight from overhead cracks, the interconnected caverns have an ethereal beauty. From the outside coral wall, most tunnels lead to a miniature 'elf-garden' lagoon inside the reef (see arrow). Large, shy cod and occasional grouper move into the small tunnels as divers swim by. It is virtually impossible to become lost although a torch will enhance your experience.

Outside, the coral is particularly vibrant with richly coloured hydro-corals growing along the walls of the cuttings. Dugong and reef sharks are often seen. But the caverns do not end here, they keep going all the way around Tukutuku Point and into the harbour. They cannot all be explored in one dive but due to the location, different cavern systems can be seen in different weather conditions.

This site is generally dived on a full day Sailaway Cruise operated from Vila, or on overnight Sailaway Safaris.