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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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. […]