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This is the entrance to the Blue Hole in Castalia, Ohio. Although, it was a tourist attraction for many years, it is no longer open to the public.
http://en.wikipedia.org/wiki/Blue_Hole_(Castalia)
http://dailypost.wordpress.com/dp_assignment/photography-101-landmark/
Thank you for sharing this its great to see places overseas x
It looks very old. Maybe it is no longer safe for visitors? There are places like that over here…..