Plunge into this deep blue hole and you'll discover imposing ancient stalactites (calcium deposits resembling icicles) and coral fringe. Declared a UNESCO World Heritage Site in 1996 – along ...

If you're scared of deep holes and the ocean, this is not the sinkhole for you. Taam Ja' Blue Hole can be found in Mexico's Chetumal Bay. It's an underwater sinkhole, known as a "blue hole ...

Tim Smith Tucked away behind an unglamorous main road, Blue Hole Park is a hidden gem that shows off both the serenity and the thrills of Bermuda's natural beauty. Located within the 12-acre ...

The Blue Hole covers an area of 164,000 square kilometers along the Argentine Continental Shelf, outside the Exclusive Economic Zone, with the following boundaries, to the north parallel 42°32 ...