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Keywords from Image Description:
Palisade Shovel Point. Palisade Head looking NE toward Shovel Point in Minnesota's Tettegouche State Park on the North Shore of LakeSuperior Own Kablammo Outcrops in Minnesota Tettegouche State Park Lake Superior Mesoproterozoic Columnar rhyolites Proterozoic of the United States Volcanism of the United States