Few staes pack so many different rocks into such a small area as Idaho. The ancient sedimentary formations of northern Idaho, the Idaho batholith in the central part of the state, the continential hot spot track, and newly discovered meteorite impact crater of the volcanic Snake River Plain, and the active faults of the Basin and Range province are all chapters in an exciting geologic story. 
 
Both authors know the rocks of Idaho well through many years of active research and they relate the store and authority, verve, and their usual style. Roadside Geology of Idaho is a book for laymen to enjoy and for geologists to use.