sixpenceee: The Great Blue Hole is an underwater sinkhole off the coast of Belize. The hole is 1,000 feet across and 400 feet deep. It was formed as a limestone cave during the last ice-age. Source: Listverse

sixpenceee: The Great Blue Hole is an underwater sinkhole off the coast of Belize. The hole is 1,000 feet across and 400 feet deep. It was formed as a limestone cave during the last ice-age. Source: Listverse

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from: https://itbeginswithahouse.tumblr.com/post/108708275262