A Rockhound’s Guide to Oregon and Washington  

January 13, 2026

By Alison Jean Cole 

Usually, when jumping into a new guidebook, I tend to skip the introduction section and dive right into the meat of it: What kind of bird, tree or mushroom was that? The few times I’ve chosen to start out with the introduction, it has been well worth my time, and the introduction to “A Rockhound’s Guide to Oregon and Washington,” by Alison Jean Cole, was no exception.   

The opening narrative expanded my understanding of the geological history of our area and the ethical and environmental considerations in rock collecting, as well as the different types of public lands and the rules for visiting each. Multiple maps showcased the locations of the recommended sites as well as the varied geologic features across Washington and Oregon.  



I would estimate this guidebook is suitable for the “very committed beginner.” The overview is comprehensible for a level-zero geologist, but getting to the suggested exploration sites takes a higher level of enthusiasm. All sites are off the beaten path and for good reason. Cole explains that easily accessible sites have been overharvested and otherwise damaged by high traffic.  

Unfortunately, this means there are no suggested sites within several hours of the Spokane area or even I-90. The closest is Stonerose Fossil Site, but Republic is hardly on the way anywhere. For most rockhounds, that means a dedicated trip. However, for those wanting to explore remote new areas and avoid crowds, this guide supplies ample opportunities. Thorough coaching is provided to prepare for visiting these wayward locations while minimizing safety risks and maximizing fun.  

On a literary level, I most appreciated Cole’s thoughtful descriptions of each site. These lend cultural and geological context to the sites and truly got me interested in exploring the far corners of Oregon and Washington for some of the earth’s treasures. (Sara Kennedy) 

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