Speaking of diving, here is another little Blue Hole:
It doesn't look very impressive, but apparently it has killed, 40+ according to the local authorities, 70+ according to everyone else who says that the authorities try to play down the number, divers.
Why you might ask. Well, it so happens, that this blue hole, has something called "The Arch". An underwater tunnel from the bluehole to the sea.
(no btw, thats not the shallow part from the sea side in the photo).
And of cource, everyone going there, just can't resist searching for it, not to mention swimming through it. But here is the thing:
Accidents are frequently caused when divers attempt to find the tunnel through the reef (known as "The Arch") connecting the Blue Hole and open water at about 52m depth. This is beyond the PADI recreational diving limit (40m) and nitrogen narcosis begins to have an influence. Divers who miss the tunnel sometimes continue descending hoping to find the tunnel farther down and become increasingly narcotised. The "Arch" is reportedly extremely deceptive in several ways:
It is difficult to detect because of the odd angle between the arch, open water, and the hole itself.
Because of the dim lighting and the fact that most light enters from outside it appears shorter than it really is. Divers report that the Arch appears less than 10m long but measurements have shown it is 26m from one end to the other.
There is frequently a current flowing inward through the arch towards the Blue Hole, increasing the time it takes to swim through.
The arch continues downward (even deeper) to the seabed which is beyond view and there is therefore no "reference" from below.
As a result, the bottom of the blue hole is apparently littered with diver corpses, as this underwater vehicle finds out:
Of cource the fact that someone has
freedived the thing doesn't really help much...
She as well:
