I am the cave,
So cool and dark,
Where time, unending, leaves its mark
As natural forces build and hone
A crystal world from weeping stone.

So begins this enchanting, expressive--and scientifically accurate--look at a limestone cave. Although some of the vocabulary can be challenging, the rhythmic, rhyming verse makes for a wonderful read-aloud, and the detailed, richly colored illustrations invite close scrutiny, providing visual explanations for many of the concepts.