By EDITOR
There is nothing else in the world that is all at once serene, awe inspiring and terrifying than the natural karst caverns that are blue holes. And it seems nothing else in the world keeps a secret better than these portals to an underwater world seldom seen by man and rarely traversed because of the danger involved and skill needed to unlock their pre-historical treasures.
If swimming is not one of your strongest assets and you are afraid of any part of the ocean where when you peer down at your toes you can’t watch them wiggle, then a dip in a blue hole might not be for you. But luckily you can enjoy their resplendent beauty from land as well as by sea.
Nowhere is the earth dotted with more blue holes than the islands of the Bahamas and nowhere on earth does a single almost symmetrical pit in the earth go from a pristine aquamarine perimeter to the total black of an abyss.
To stand beside a blue hole on land and look down into its unseen depths is akin to staring up at a starless/moonless night sky querying its vast expanse.
If you think a blue hole is simply a bucket-like pocket in the earth you would be wrong (though in some cases it is).
But the floor and walls of a blue hole can sometimes fan out, like dropping through a chimney and tumbling out into a great ballroom. In some instances a blue holes is merely the entrance to a vast cave system that often stretches for miles beneath land and ocean.
While this all sounds overwhelming and a bit freaky, blue holes are enjoyed by environmentalists, novice divers and snorkelers alike and in some settlements in the Bahamas, are used as the community swimming pool – though one teeming with marine life.
But where do these natural wonders come from and what are those secrets you were talking about, you ask.
During the ice age when sea levels were hundreds of meters below where they are now, these caves and cave systems were carved out over many hundreds of years by erosion due to rainfall.
What was left after the ice melted were a vast number of pits in the earth that filled with water and created what we know today as blue holes.
Last year National Geographic did an expose on the blue holes of the Bahamas for its August issue of the magazine and a segment for television. On its website it described blue holes as the “least studied and most threatened habitats on Earth.”
Some of the more famous blue holes around the world are the Great Blue Hole of Belize, Dean’s Blue Hole in Long Island, Bahamas and blue holes on Grand Bahama Island in the Bahamas that make up some of the longest subterranean, submerged caves in the world.
The Great Blue hole is a part of Belize’s protected barrier reef system and was made famous by renowned explorer Jacques-Yves Cousteau, and has been kept in the spotlight by intrepid divers.
Dean’s Blue hole is said to be the deepest blue hole in the world and at almost 700 feet deep it has been used to set the world free diving record over and over again.
Undersea Blue holes afford those who dare to brave them some of the most ethereal experiences that can be had.
Most in-land blue hole exploration is done by expert cave divers, though there are some that are novice-diver friendly.
But when scientists strap on their special gear – Caribhype had the good fortune to view some of the gear first hand on Andros Island in the Bahamas last year – and brave toxic bacteria, strong currents and the dizzying halocline (where water of different salinities meet) found in the depths of some blue holes, amazing things are uncovered that have been lost for millennia.
National Geographic’s article spoke of explorers finding the skulls of Lucayan Indians – now long died out – deep within the cavernous blue holes. And they have even found the fossilized skull of a 3,000-year-old Cuban Crocodile; a species long forgotten in the Bahamas.
Blue holes are veritable treasure chests of ancient artifacts. Scientists have even found sand from the Sahara Desert, which must have been transported more than 6,000 miles.
But if you are not studying them, they are still a beautiful and intriguing natural wonders that have to be seen to be believed and should be an important part of any bucket list.
Here is the link to the National Geographic story for more awesomeness on blue holes – enjoy: http://ngm.nationalgeographic.com/2010/08/bahamas-caves/todhunter-text









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