This Eastern Idaho Cave is a Perfect Trip for Beginning Spelunker
Once upon a time, Idaho was very different from the high dessert it as today. Thousands of years ago, the Gem State experiences volcanic eruptions that not only formed places like Craters of the Moon, but some cool caves too! According to Visit Southern Idaho, the caves developed when those lava streams from those eruptions formed a crust, cooled and left behind tube that lava could flow through. Eventually the Idahos volcanoes became inactive and all that was left behind were the caves. Tha...
Source: liteonline.com