Columnar basalt rock. Basalt is a fine-grained, extrusive igneous rock found in most lava flows. Its pentagonal and hexagonal geometry is due to contr

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Columnar basalt rock. Basalt is a fine-grained, extrusive igneous rock found in most lava flows. Its pentagonal and hexagonal geometry is due to contraction on cooling. Basalt is extensively used in the construction industry. Photographed in Canada.

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Photo credit: © DAVID NUNUK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -life, 1, edible, food, foods, foodstuff, foodstuffs, fragaria, fruit, life, red, single, sp., strawberry