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.
Winslow Township, New Jersey
The Blue Hole is a body of water in the middle of woods that is clear blue and always cold, even in the summer, with a very steep shoreline and a maximum depth of approximately , though "Weird NJ" describes the water as "bottomless" and claims that it is a haunt of the Jersey Devil.