World's Most Stunning Sinkholes

Great Blue Hole

Part of the larger Belize Barrier Reef Reserve System, which was declared a World Heritage Site by UNESCO; the Great Blue Hole is a spectacular sinkhole at 124m deep with stilted stalactites as its most unusual features. The largest submarine sinkhole off the coast of Belize, it lies in the center of Lighthouse Reef. It is circular in shape, over 300m across and 124m deep and was formed during several episodes of Quaternary glaciations when sea levels were much lower.