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Access The Sand Dunes ACEC is located in north central Sweetwater County. Access to the dunes is by the Tri-Territory Road (County Road 4-17) which leaves U.S. Highway 191 approximately 11 miles north of Rock Springs.


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Access The Sand Dunes ACEC is located in north central Sweetwater County. Access to the dunes is by the Tri-Territory Road (County Road 4-17) which leaves U.S. Highway 191 approximately 11 miles north of Rock Springs.
