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The Great Blue Hole as it is known is one the ”gotta do” dives for every serious diver. While not for the novice, it is still doable for most divers. Cousteau called it one of the top ten dives in the world. Analysis of the formations from the ‘Hole’ show it to have been formed during periods of glaciation in four stages starting 153,000 years ago, and again 66,000, 60,000, and 15,000 years ago. Formed when sea levels were hundreds of feet lower as a normal limestone cavern, and at some point the roof over the subterranean cavern collapsed, it became flooded as the glaciers melted and the sea level rose to its present height. The ‘Hole is approximately 1000 feet across and 400 feet deep, well beyond sport diving. Trips to the ‘Hole’ are usually done on the south wall which has the only formations available to the average diver. There is a side cave which goes back a short distance which has a group of stalagtites and stalagmites up to 40 feet long. These start at about 120 feet and extend to 160 feet.
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