2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

IMMG has opened for the season. Saturday only 12-5.

Free Admission!

Tours and other programs available.

  1. Events
  2. Field Trips

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Today

Field Trip: Grimes Creek-CANCELLED

Unfortunately due to the fires/smoke in ID and the COVID-19 Delta variant this event has been CANCELLED Field Trip to Grimes Creek with Claim Owner and Gold Expert, Don Adair. Learn how to find the gold! Join Don Adair, Professional Geologist, on a rare gold-panning experience at his claim on Grimes Creek. You will learn […]