Australia

From cage-free shark dives on wreck sites to guided outback hunts and undeveloped cave systems — Queensland's extremes are as much about remoteness as adrenaline.

10 extreme lines

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Surfing · Tasman Peninsula, Tasmania

Big wave surfing, Shipstern Bluff

INSANERisk: EXTREMEFree

A slab wave breaking over a shallow, ledging reef beneath sheer dolerite cliffs — regularly cited among the most dangerous waves surfed anywhere, with a notorious "step" in the wave face that has broken boards and bodies. Access alone is a serious undertaking: a boat or a steep bushwalk in, in one of the most remote big-wave setups in the world.

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Diving · Ayr, North Queensland

Cage-free shark dive, SS Yongala wreck

EXPERTRisk: HIGHAUD ~300–450 per two-dive c…

Advanced open-water dive on one of the world's best wreck dives — a 109m cyclone-sunk steamer now covered in coral, with resident bull sharks, tiger sharks, giant groupers and sea snakes circling in strong current. No cage, no bars, just buoyancy control and a dive guide who knows the wreck.

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Canyoning · Blue Mountains, NSW

Canyoning, Claustral Canyon

EXPERTRisk: HIGHAUD Guided ~200–280; free w…

A full-day technical canyon descent through slot passages, abseils and long swims in cold water beneath sandstone cliffs west of Sydney — one of the classic hard canyons in the range, with sections that trap sound and light and no easy bail-out once you're committed.

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Cave Diving · Nullarbor Plain, Western Australia

Cave diving, Cocklebiddy Cave

INSANERisk: EXTREMEExpedition-level trip;…

One of the longest underwater cave systems in the world, with kilometres of flooded passage under the Nullarbor Plain. This is technical cave diving at the sport's extreme end — full cave certification, redundant gas and lighting, and a support team are non-negotiable; it has killed experienced divers.

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Wildlife Expedition · Nitmiluk & Kakadu National Parks, Northern Territory

Crocodile-country wild kayaking, Katherine Gorge & Kakadu

ADVANCEDRisk: HIGHAUD Guided multi-day ~600–1…

Multi-day kayak and wild-camp expeditions through gorge systems that are genuinely saltwater and freshwater crocodile habitat — rangers monitor and close sections when crocs are active, and paddlers are expected to check current croc-management advice before setting out, not assume the water is safe because it looks calm.

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Diving · Port Lincoln, South Australia

Great white shark cage diving, Neptune Islands

ADVANCEDRisk: HIGHAUD ~500–800 for a day char…

Baited cage dives in the open ocean around the Neptune Islands, one of the most reliable great white aggregation sites on Earth. Surface cages need no certification; deeper "ocean floor" cage options are offered by some operators for certified divers wanting the sharks at eye level rather than looking down from the surface.

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Hunting · Western QLD stations

Guided feral game hunt, outback Queensland

EXPERTRisk: HIGHAUD 1,500–5,000+ depending…

Licensed, landholder-approved hunts for feral scrub bulls, boar or deer on remote outback stations. Multi-day trips on foot or by 4WD, tracking animals across genuinely vast, waterless country — the risk here is as much heat, dehydration and isolation as the game itself. Requires a firearms licence (or hire through the outfitter) and written landholder permission.

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Skydiving · Mission Beach, Queensland

Skydiving, Mission Beach

ADVANCEDRisk: HIGHAUD ~350–450

Tandem jumps from up to 15,000ft with a freefall over the Coral Sea, the Great Barrier Reef and the Daintree rainforest simultaneously in view — one of the more scenic tandem skydive backdrops on the planet.

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Caving · Chillagoe, Far North Queensland

Wild caving, Chillagoe–Mungana Caves

ADVANCEDRisk: MODERATEAUD Permit is low-cost; gui…

Beyond the show caves, permitted wild/adventure caving routes wind through undeveloped limestone tunnels — tight squeezes, pitch darkness, and no fixed lighting or handrails. A national parks permit is required for the undeveloped systems, and a local guide is strongly recommended since routes are unmarked and mobile signal is nonexistent underground.

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Wilderness Trekking · Southwest National Park, Tasmania

Wilderness trek, Western Arthurs Traverse

EXTREMERisk: SEVEREFree

A 7–10 day off-track traverse of an exposed quartzite ridgeline regularly cited as Australia's hardest bushwalk — no huts, no phone signal, notoriously violent weather even in summer, and sections of scrambling with full packs along an alpine crest. Self-sufficient parties only; rescue from the range interior can take days.

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