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The Blue Hole is one of the most famous dive sites in the world, it´s also the dive site started the hype of diving in Dahab. Usually one enters this site through an open chimney called the Bells. The name comes from the sound of tanks touching the wall as it’s very narrow, only one diver can go down at a time. Divers exit this chimney at approximately 26m and swim to the right along the outer wall of the Blue Hole where majestic overhangs full of corals are waiting to be marve
The Blue Hole is a submarine sinkhole, with a maximum depth within the hole of just over 100 m. There is a shallow opening to the sea around 6 m deep, known as “the saddle”, and a 26 m long tunnel, known as “the Arch”, whose ceiling is at a depth of 55 m and whose bottom falls away as it reaches the seaward side to about 120 m. On the seaward side the floor drops steeply to over 1,000 metres. The hole and the surrounding area have an abundance of coral and reef fish. The Blue Hole is popular for freediving because of the depth directly accessible from shore and the lack of current.
