What's a Bahamas Blue Hole

No, it's not a drink. We took a nature tour and one of the stops was the blue hole. The camera doesn't do it justice. Our tour guide was great and gave us a detailed history of the native people and the ecology of the area. The blue hole is part of a series of underwater tunnels and people do scuba dive the tunnels a few times a year. I think I'm a little too claustrophobic to ever consider that!