I found this book for sale at Kartchner Caverns. It also has amazing pictures. I also toured the cave and am very thankful for the opportunity to do so without crawling on my belly though bat guano. This is basically the account of how anybody is able to walk through this cave that nobody wasn't discovered until 35 years ago.
Of particular interest to me was the discovery, the people who discovered it, and the political methods used to make this a state park.
The author doesn't assume that you know anything about caves, geology, or politics. At the same time, he doesn't alienate people from both these areas (I am a geoscientist who works in government and didn't fing things too basic at all). I think Miller pulls this off by focusing on the people and their roles in this story.