BASALT COLUMNS CALLED DEVILS POST PILE —YOSEMITE NATIONAL PASS … BASALT COLUMNS-YOSEMITE NATIONAL PABX. contraction, the hexagonal shape being due to thnfact or law that this is the only possible result ofthe combined action of contracting forces acting inall directions in one plane. Some of the most famous basaltic columns are tobe seen in Nova Scotia, at…
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