Greetings from Belize. Yesterday, I made one of my life-long dreams come true. I dove the Great Blue Hole, a submarine cave about 45 miles off the coast of Belize. They say after diving it, divers are usually either utterly disappointed or absolutely blown away. I found it absolutely amazing. The Great Blue Hole is circular, over 1,000 feet (330 meters) across and 400 feet (120 meters) deep. It was formed as a limestone cave system during the last ice age. As the ocean began to rise again, the caves flooded, and the roof collapsed. The trip To get to the Blue Hole, we booked a diving with the operator Aqua Dives Belize. They offer a $199 per ...