Cave Geology | 
I spent all last week going through the fantastic caves of Mammoth Cave National Park and now I‘m reading this to get my brain around cave formations as I research for a book in process. If you‘re crazy enough to love caves like I do, Palmer‘s study on speleology is very thorough and not so technical as to be beyond the fascinated novice. (I‘m definitely going to need some Georgette Heyer for comic relief when I‘m done!)
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