Locations
Émergence du Ressel
A river resurgence in south-west France that has drawn cave divers for decades. Shallow galleries lead to deep shafts, and the dive can be as simple or as serious as you make it.
Section
Cave
Cave and cavern diving
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Locations
Mount Gambier
Clear water, limestone sinkholes and a history that shaped cave diving in Australia. South Australia's karst country is one of the world's most distinctive cave-diving regions.
Gear
Backmount, sidemount or CCR?
The platform you choose shapes almost every other decision about your diving. What each one does well, where each one struggles, and how divers choose.
Gear
Standardised or personalised?
Should every diver on a team use exactly the same configuration, or should each diver adapt their kit to themselves and the site? One of the longest-running arguments in technical diving.
Gear
Long hose or octopus?
How you donate gas to an out-of-air diver affects how you both get out. The long-hose method dominates technical diving, but it's not the only option.
Safety
The Blueprint still holds
In 1979 Sheck Exley looked at why cave divers died and found the same few mistakes again and again. More than forty years later, his list still explains most accidents.
Safety
Rule of thirds or minimum gas?
Two ways to decide how much gas to keep in reserve. One is simple and proven in caves. The other is calculated for the dive. Here's how each works, with a worked example.
History
Sheck Exley and the rules of cave diving
The most influential cave diver of his era set depth records, wrote the rules that still save lives, and died pursuing a 1,000-foot dive. A profile.