2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

Currently closed for the winter. Re-opening is scheduled for May 2nd.

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.