Venezuela’s Canaima National Park, Angel Falls reigns as the undisputed king of waterfalls. But Angel Falls’ kingdom only stretches above ground.

The world’s largest waterfall is actually underwater, located in the Denmark Strait, between Iceland and Greenland. Towering at more than three kilometers high, it is three times taller than Angel Falls. Every second, more than three million cubic meters of cold, dense water emanates from the strait.