We are located at

2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

We hope to have Special Events this winter. Click "CALENDAR" below to see any upcoming events. Regular hours will resume in Spring 2022. Check this website for updates.

Free Admission!

Tours and other programs available.

Scouts Rock!

Girl Scouts of Silver Sage:

Join Girl Scouts and the Idaho Museum of Mining and Geology for a fun day getting outside and engaging with the Earth!  Girls will take a tour of the museum where they can explore different types of rocks and learn about the history of mining in Idaho.  They will then go on a hillside hike to Castle Rock (.7 miles RT) to experience Idaho’s geologic features first hand.  Please arrive ready to hike with appropriate hiking shoes and water bottle. 

This is not a drop off event. Parents/Guardians or troop leaders must stay for the full activity. Please no tag-alongs; please leave non-participating siblings at home.

Please contact Silver Sage Council for registration.

Boy Scouts of America:

The IMMG  offers programs  to assist Boy Scouts (Cubs and Webelos) to meet Earth Rocks Adventure Patch requirements.