bn:03179992n
Noun Concept
Categories: Articles with short description, Underwater diving sites, Sinkholes, Cave geology, Sea caves
EN
blue hole
EN
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. Wikipedia
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EN
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. Wikipedia
Marine sinkhole or cavern Wikidata
A submarine cave or sinkhole, a roughly circular, steep-walled depression that is typically anoxic below a certain depth. Wiktionary
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