Blue Hole Diving - شرم الشيخ / دهب

Описание: Blue Hole is a diving location on east Sinai, a few kilometers north of Dahab, Egypt on the coast of the Red Sea.
The Blue Hole is a submarine sinkhole, around 130 m (462.5 feet) deep. There is a shallow opening around 6 m deep, known as "the saddle", opening out to the sea, and a 26 m long tunnel, known as "the arch", whose top is at a depth of 56 m (184 feet). The hole and the surrounding area have an abundance of coral and reef fish.

https://en.wikipedia.org/wiki/Blue_Ho...)