Dive into wet and wild fun! From an underwater caving adventure in Brazil to a secret swimming hole deep in a desert canyon and a breathtaking 230-foot rain forest waterfall, we explore the world's most top-secret swimming holes.

Explore the world's most top-secret swimming holes, including the mystical Fingal's Cave in Scotland which boasts symmetrical basalt columns, and an incredible limestone pool hidden from the horizon in the desert of Oman.

From a gorgeous underground lagoon on the Hawaiian island of Oahu, to an adrenaline-filled 70-foot cliff jump in California, to the most unexpected scuba dive location in the world, uncover the planet's best-kept swimming hole secrets.