Blue Hole (Castalia)
The Blue Hole is a fresh water pond located in Castalia, Erie County, Ohio, in the United States. From the 1920s to 1990 the Blue Hole was a tourist site, attracting 165,000 visitors annually at the height of its popularity, partly because of its location on State Route 269, about southwest of the Cedar Point amusement park in Sandusky, Ohio.
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.