Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A decent introduction to caves of Central Oregon.

If you're interested in buying a book on lava tube caves for the central oregon region. Than this is a really good beginner's book on locating these caves. Some of the caves listed within are: The Charcoal Caves, Deg Cave, Bat Cave, Arnold Ice Cave, Derrick Cave, Redmond Caves, Sawyers Ice Caves, Surveryors Cave, Skylight Cave, Lava River Cave and much more. It includes overhead maps, as well as side view maps of these caves, and even has a couple of paragraphs about each cave.