58.7 MB (6.7 MB compressed)
5546 x 3697 pixels
47.0 x 31.2 cm ⏐ 18.5 x 12.3 in (300dpi)
DR JUERG ALEAN / SCIENCE PHOTO LIBRARY DR JUERG ALEAN / SCIENCE PHOTO LIBRARY
Basalt columns and volcanic, black sand beach near Vik, southern Iceland. Basalt columns form when lava solidifies and contracts causes a polygonal joint pattern.
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