Also see The Blue Hole of Castalia and Where Nowhere Is.
Tom Herman submits this photo of one of the salt mines underneath Lake Erie:
Old friend Daved Hild submits:
Bill Coderre reports:
I saw this in the paper, and thought that it would bring a smile:
Dinosaur World, an 'Old Florida' style roadside attraction, thrives near Tampa, defying the Disneyfication of Florida.