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.

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June 2021

Mineral Identification with Coyote Short

June 27 @ 1:00 pm - 3:00 pm

Coyote Short PG can identify rocks, minerals and Native American artifacts.   Bring in your specimens and she will help you identify them! Coyote Short is a Professional Geologist, licensed in Idaho. She is one-half Paiute-Modoc Indian and one-half French. Coyote is the last in her line to carry the ancient knowledge handed down to her by Grandmother Raven on the Paiute side and Grandmother Hallie on the Modoc side. Born in central Idaho, she has lived in various parts of…

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July 2021

Terry Maley Lecture: How the Yellowstone Hotspot Dominated Northwest Geology for 56 Million Years

July 11 @ 1:00 pm - 3:30 pm

The presentation will begin with the first evidence of the Yellowstone mantle plume some 56 million years ago when it was offshore western North America and created the huge oceanic plateau called Siletzia. We will follow the hotspot track through time and space as well as explain how it may have caused such diverse and widespread volcanic and tectonic events that dominated the geology of the Northwest for the last 56 million years. The Yellowstone plume has left a linear…

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Geode Cracking

July 18 @ 10:00 am - 1:00 pm

Crack a geode and marvel at the wonders within. The most marvelous part...you get to take your geode home with you! Join us at the museum to crack geodes from around the world. Who would believe that a rock could hold such a surprise inside! The event will focus on children, but we will have enough geodes for adults, too. Our Master Geode-cracker, Truman Keith, is coordinating his experienced team and they will cut geodes using a giant pipe-cutter. It’s…

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