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Snake River Plain Cobble is formed from volcanic rock deposits shaped over thousands of years by the movement of the Snake River and regional geological activity. As the river carried and rolled the stone downstream, the rocks became naturally rounded and smoothed through erosion and water flow.
Snake River Plain Cobble is formed from volcanic rock deposits shaped over thousands of years by the movement of the Snake River and regional geological activity. As the river carried and rolled the stone downstream, the rocks became naturally rounded and smoothed through erosion and water flow.