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WI-95-3-SP Moss and lichen covered basalt boulders at Interstate State Park, St. Croix National Scenic River, Wisconsin
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Moss Covered Boulders

Interstate State Park, Wisconsin

WI-95-3-SP

Moss and lichen covered basalt boulders at Interstate State Park, St. Croix National Scenic River, Wisconsin. Photo © copyright by Gary Alan Nelson.

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