The geology of Southern Idaho is something special. It's a land of contrasts, with active volcanoes, hot springs and river canyons all shaping the landscape. Boasting a variety of sedimentary rock formations and ancient lava flows, this region is full of geological wonders. From basalt columns to rugged sandstone bluffs, Southern Idaho's geology offers an array of wonders to explore. From the massive floods that shaped Auger Falls to the towering monuments at City of Rocks, there’s a geological adventure waiting in every corner of Southern Idaho!

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