Exploring the Bottom of the Great Blue Hole, Belize
History was made on Dec 2, 2018 when multiple submersibles dove to the bottom of the deepest sinkhole in the world, the 407ft/124m deep Blue Hole in Belize. Located in Lighthouse Reef, approx 70 kms off the coast of Belize, the Great Blue Hole is part of the Barrier Reef Reserve System, a UNESCO World Heritage Site.