Idaho & Western Montana are two of the Northwest's most popular rock & gem collection destinations, overflowing with beautiful scenery, mineral riches, and rockhounding adventure.

An ideal field guide for both amateur and more experienced rock and fossil hunters, each site's write up has an "at-a-glance" info box that tells you what specimens you'll find, the best season for collecting, GPS coordinates, recommended tools and nearby attractions & facilities.

99 collecting sites featured!