Belize's Great Blue Hole is one of Earth's most mysterious ... have transported coarse particles from the nearby atoll reef into the Hole, forming distinct layers at the bottom.

It's the Taam Ja' Blue Hole in Mexico's Chetumal Bay, once thought to be the world's second-deepest known blue hole. But as researchers explained in an article published in the journal Frontiers ...

Researchers say the Great Blue Hole has revealed a ‘concerning ... coarse particles that have been transported from the nearby atoll reef by storm waves and surges. The storm deposits have ...

Belize's Great Blue Hole is one of Earth's most mysterious ... have transported coarse particles from the nearby atoll reef into the Hole, forming distinct layers at the bottom.

They were rolling in the deep. Scientists have identified what could potentially be the “deepest known blue hole” in the world, extending so far down that the bottom has not yet been reached.

Belize’s Great Blue Hole, pictured here, is probably the most recognizable blue hole. The newly discovered blue hole off the coast of Mexico is even deeper. Photo: The TerraMar Project ...

Divers have finally made it to the bottom of Belize’s iconic Great Blue Hole, but a dirty secret was lurking at the bottom of the pristine natural wonder. The Great Blue Hole is a giant marine ...

Drone image from 200 meters height above the “Great Blue Hole,” showing the drilling platform anchored in the center. Visible in the background is the edge of the Lighthouse Reef Atoll.

Lighthouse Reef Atoll, home to the Great Blue Hole, offers much more than just the famous sinkhole. The surrounding dive sites are equally captivating and feature some of the healthiest coral ...