When studying rocks, the Friz knows it's best to go directly to the source!Narrator: Polly Adams, Cassandra Morris & a cast of kidsFORMAT: 1 CD, UnabridgedRock collecting has never been quite like this! When the class forgets to do its homework, a fieldtrip through the Earth's crust, into the center of the Earth, and out through a volcano will teach them not to forget their assignments again - and then some!
