Just outside Grace, Idaho, is the Niter Ice Cave. Formed around 500,000 years ago, this cave is a result of lava flows. Early settlers would use the cave for refrigeration. The cave has some graffiti, but it is a great lava tube for exploring.
Just outside Grace, Idaho, is the Niter Ice Cave. Formed around 500,000 years ago, this cave is a result of lava flows. Early settlers would use the cave for refrigeration. The cave has some graffiti, but it is a great lava tube for exploring.