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Columnar Basalt Pillars |
Some of the best examples of columnar basalt, formed eons ago by volcanic forces and since exposed to view, can be seen near the Crab Creek Marsh Unit #3 in the Columbia National Wildlife Refuge.
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Columnar Basalt Pillars |
Some of the best examples of columnar basalt, formed eons ago by volcanic forces and since exposed to view, can be seen near the Crab Creek Marsh Unit #3 in the Columbia National Wildlife Refuge.