Oh and if your ever driving down 81 in Virginia through the mountains get out and take a picture of Fancy Gap. So beautiful. Pictures don't do it justice.

 

Old thread but I'm a big fan of caves and there are 3 in WI I can think of off the top of my head.

Cave of the mounds near Blue Mounds
Crystal Cave up north farther near Spring Valley
Eagle Cave in western WI near Blue River

Get more caves on that list!