I have one of the most dangerous jobs in the world, even though I've lost many colleagues and a single mistake could cost me my life... that's what I love about this job.

Jill Heinerth, a cave diver for 30 years, is featured in the new book Adventuress: Women Exploring the Wild. “Despite the risks,” underwater caves “represent the ultimate challenge” for Canadian Jill. READ MORE: I traveled through the Amazon jungle on a cargo ship. Here's what I saw...

By Ted Thornhill, Mailonline Travel Editor

Published: 3:05 p.m. GMT, January 16, 2024 | Updated: 17:10 GMT, 16 January 2024

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'Most people look into the darkness of a cave and see only blackness terrifying. I see an unexplored world of possibilities.'

So says Canadian Jill Heinerth, a cave diver for 30 years, in the fascinating new book Adventuress : Women Exploring the Wild. (£39.99/$55, Prestel), a tome that features 20 “extraordinary” women “with a deep desire for adventure.”

Jill , filmmaker and photographer, recognizes that his job is considered the most dangerous in the world and that a single mistake could cost him his life.

But “despite risks", underwater caves "present the ultimate challenge" for Jill and "make her feel like a kid in a candy store."

She writes: “People look at my work and suggest that documenting the underwater cave world might be the most dangerous job there is.