Deepest dive in spring-connected tunnel [USA]

Last updated: August 21, 2017 at 14:01 pm

In July 2007, a dive expedition led by Jeff Petersen (Karst Underwater Research) used underwater scooters to reach the base of an underwater mountain known as Mount Doom at a depth of 124 m (407 ft) in Weeki Wachee Springs, Florida. The team explored more than 2,042 m (6,700 ft) of underwater tunnels at an average depth of 81 m (265 ft) beyond the source of the river.

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