Hidden Waterfalls Around the World You Can Swim Under

By

Lisette Marie

June 28, 2025

5. Gaping Gill, England

Gaping Gill, England. Photo Credit: Wikimedia Commons @Andrew Tryon&#160

One of England’s most unique waterfalls, Gaping Gill is hidden inside an enormous underground cave in the Yorkshire Dales. The waterfall plunges over 300 feet from the surface into the cavern below, creating an otherworldly swimming experience. Reaching it requires an adventurous descent through a narrow cave system, but once inside, you're met with the eerie beauty of an underground waterfall illuminated by beams of sunlight filtering through the rock. The water is cold and crystal-clear, making it an exhilarating swim like no other. Why It’s Special: A subterranean waterfall hidden in an underground cave.

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