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 (New Jersey)
After people became afraid of it, the Blue Hole was largely abandoned. A possibility is that farmers and families in the area warned children against going to the Blue Hole because the Jersey Devil lived there and it would hurt or steal them. Locals still go to the area and use it as a party spot. There are many other 'blue holes' in the immediate vicinity, as well as quicksand and other seasonal ponds and lakes that form from springs seeping from high water table levels. The Blue Hole is not to be confused with the numerous former quarries in the area, which appear much larger and have a vibrant sky blue color.