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Red Rock Pass


 

Red Rock Pass is a mountain pass in Idaho that is famous for being the spot at which the ancient Lake Bonneville was emptied.

Related Topics:
Idaho - Lake Bonneville

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The pass was cut through a sill of resistant Paleozoic shale, limestone, and dolomite, and forms a narrow gap two miles (3 km) long. At one time the pass was 300 feet (100 m) higher, where the shoreline of Pleistocene Lake Bonneville stood.

Related Topics:
Sill - Paleozoic - Shale - Limestone - Dolomite - Pleistocene

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