Not what it seems at first
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Not what it seems at first

by Evangelos Karageorgos, Laboratory of Atmospheric Pollution and Pollution Control Engineering, DUTh, Xanthi, Greece

Although at first they might look like a sierra crest viewed from an airplane, they are in fact cloud formations shot with an ultra-zoom lens, at dusk, sometime in late February 2009.

Featured on GeoLog, the official blog of the European Geosciences Union