Caves and Caverns

This is a terrific children's picture books, with lots of details about different parts and features of caves, how caves form and plants and creatures that can live inside of caves. Gail Gibbons has a nice balance of real information that is presented in an easy-to-understand format.

Here's a little sample of the style and content:

"Next, the cavers carefully enter the variable temperature zone. The temperature doesn't change as much here as it does in the twilight zone. Mushrooms, molds, and other fungi grow here. It is dark!"