Temple of Doom is a large, kidney-shaped bommie on the Ribbon Reefs, rising from a sandy seabed at about 24 m to within 3 m of the surface. It takes its name from its fish-eating residents: Dive the World notes it is named for its piscivorous fish, and schools of bluefin trevally up to 70 cm long hunt around the structure, providing near-constant predatory action.

The bommie's sides are cut with overhangs at 15–20 m where turtles rest and sharks shelter. The top is covered in hard and soft coral and feather stars, and schools of fusiliers, Moorish idols, butterflyfish, angelfish and surgeonfish crowd the upper levels. Redtail butterflyfish, trumpetfish, yellow goatfish, batfish and anemonefish are common, and sea squirts and nudibranchs decorate the walls. Large rays and reef sharks visit, and dwarf minke whales pass in the winter months.

Diversion Dive Travel gives an average depth of 20 m and a typical dive of 45 minutes. The shape of the bommie makes navigation simple: circle it once at depth and then work up.

Temple of Doom suits intermediate divers and is a good choice for photographers who like action, as the trevally attacks on baitfish can be spectacular in good light. Its precise location is not stated in the sources consulted, but it is grouped with the southern Ribbon sites, so the coordinates here are estimates. Treat it as a relaxed pinnacle dive with plenty of fish action and a straightforward profile, and save some air for the top, where the smaller reef fish are at their densest and the light is best.

Liveaboard only (or fly-dive via Lizard Island). Mike Ball Dive Expeditions' Spoilsport and Spirit of Freedom depart Cairns (Trinity Wharf / Marlin Marina) in the evening and steam north overnight, roughly 12–14 hours and 200–250 km, to reach the Ribbon Reefs by morning; some itineraries fly Cairns–Lizard Island (about one hour, scenic flight along the coast) and board or disembark there. Trips run 3–7 nights and include Temple of Doom on some Ribbon Reef itineraries.

Divers enter by giant stride from the dive deck at the mooring and descend the mooring line. The bommie is dived from a nearby mooring; divers descend to the sand and circle the structure.

The Ribbon Reefs sit on the edge of the continental shelf and take the full south-east trade wind from April to October. Lagoon-side moorings stay diveable in 20–25 knot SE winds, but reef-front sites and passes need lighter winds; liveaboards shelter behind the reefs overnight. September to December is usually calmest.

Tidal flow through the gaps between the Ribbons is strong on springs, so exposed pinnacles are timed for slack water. December to April brings rain, lower visibility and cyclone risk; box jellyfish and Irukandji are possible November to May.

Descend to the sand at about 20–24 m, work around the bommie at 15–20 m checking the overhangs for turtles and resting sharks, watch the blue for bluefin trevally hunting, then rise over the top at 3–5 m for the safety stop.

Ribbon Reef liveaboards – Spirit of Freedom and other Cairns liveaboards; occasional.