Blue Hole

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Date of Reg.	2019-09-20 12:24:32
Date of Upd.	2023-01-05 22:50:05
ID	1262437

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About Blue Hole

A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock. Blue holes typically contain tidally influenced water of fresh, marine, or mixed chemistry.

The Deepest Breath: 'Nerve-shredding' documentary explores perils of freediving

Jul 13,2023 10:30 pm

... We also see them at Dahab s notorious Blue Hole in Egypt, which has a terrifying-looking 25m-long tunnel, 55m below the Red Sea...

Blue hole Photos

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