Cave diving offers the thrill of exploration, discovering places that no other person has ever seen. That's certainly what attracted Agnes Milowka. But in this remote other world, any mistake can be deadly.

Reporter: Allison Langdon
Producer: Nick Greenaway

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For forty years, 60 Minutes have been telling Australians the world’s greatest stories. Tales that changed history, our nation and our lives. Reporters Liz Hayes, Allison Langdon, Tara Brown, Charles Wooley, Liam Bartlett and Tom Steinfort look past the headlines because there is always a bigger picture. Sundays are for 60 Minutes.