Blue Holes

Connected Sites: 3

"A blue hole is a cave (inland) or underwater sinkhole. They are also called vertical caves .....Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them." (Wiki - see http://en.wikipedia.org/wiki/Blue_hole )

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Connected Sites

Belize Barrier Reef
Inscribed: 1996
3.52
145
11
Geat Blue Hole Near Ambergris Cay
See En.Wikipedia.Org
Rock Islands
Inscribed: 2012
4.00
39
6
The Blue Holes Dive Site Is Situated In The Ngemelis Islands
See Www.Fishnfins.Com
Great Barrier Reef
Inscribed: 1981
4.21
240
8
Pompey Hardline Reef Complex - Barrier Star Blue Hole And Crystal Blue Hole
See Www.Divetheblue.Net