Blue Hole (Big Pine Key)
The Blue Hole is an attraction on the island of Big Pine Key in the Florida Keys. It is an abandoned rock quarry that was used for nearby road fills and Henry Flagler's Overseas Railroad. The water it contains is mostly fresh and is used by various wildlife in the area, such as birds, snakes, alligators, key deer and green iguanas. It is part of the National Key Deer Refuge.
Blue Hole (Red Sea)
The Blue Hole was historically avoided by Bedouin tribes people who inhabited the area. There was a local Bedouin legend that the Blue Hole is cursed by the ghost of a girl who drowned herself there to escape from an arranged marriage.