Narrator: There's a massive underwater sinkhole off the coast of Belize that extends ... and the cave flooded and collapsed, leaving behind the Blue Hole we see today. Researchers think that ...

Belize's first ever cave management policy was launched today at St Herman's Blue Hole National Park, the home to one of three open caves in the country. The policy seeks to protect the cave's natural ...

A Gate of Hell? The entrance to the Actun Tunichil Muknal Cave in Belize. (photo credit: Blue Ice. Via Shutterstock) Steeped in myth and history, sites from Israel to Belize to Ireland have been ...

Its mesmerizing sapphire-blue waters and perfectly circular shape ... civilizations or marveling at the beauty of nature, ...

Created during the last glacial period approximately 10,000 years ago after a cave roof crumbled ... The Great Blue Hole is located about 60 miles off the coast of Belize along the Lighthouse ...