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Alcántara Gorge | Basalt columns
WI_e2143a.jpg Alcántara Gorge | Basalt columnsThumbnailsStromboli | Volcanic layers

The Alcántara River has eroded a narrow gorge into the lava erupted by the nearby Etna. The columns shown in the photo have formed due to contraction of the basaltic rocks during a slow cooling and solidification process.

Sunday 1 June 2003 by Martin Mergili in Europe / Italy (517 visits)