The Minidoka National Historic Site was the place of one of the former Japanese "internment camps" that was erected during World War II. Although, not a geological park there are some geological elements to the park.
My lovely daughter presenting our NP sign.
Some background information on the Relocation Center.
One of the few remaining original structures. The building materials for these structures was almost exclusively the local vescular basalt (basalt with a lot of holes in it). The basalt was formed in the Snake River Plane when the Yellowstone Hot Spot (volcano) was located within Idaho. The hot spot hasn't actually moved, but the North American plate has moved westward across the hot spot, creating this volcanic valley through Idaho, now known as the Snake River Plain.
A close up view of one of the vesicular basalt blocks.
View of the Internment Camp fence with the nearby Clover Creek running alongside it. Clover Creek is a tributary of the Snake River. The residents of the internment camp created a pool out of the water from the creek since the creek itself was too fast to allow for safe swimming.
Panoramic shot of the park and the region along one of the park trails. Mostly flat within the Snake River plain. Footprints of the former buildings are visible along the way.