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Huh?  Is this really Ohio?  I'm there!! Old Man's Cave Gorge - Logan, Ohio

Old Man's Cave Gorge by Jeff and Heather Morris via Filckr. "Old Man's Cave, a narrow, deep gorge featuring waterfalls located in Hocking Hills State Park, Ohio.

Algarve, Portugal

Secluded cave near Lagoa Algarve Portugal [Portugal is has it all. great food and wine sights natural spots (like this one) friendly people. and you can get away with your high school Spanish if you need to.