English: The arctic ice pack at the North Pole shows pressure ridges. Expedition members are taking air samples. April 16, 1990, Lorenz.King@geogr.uni-giessen.de
Deutsch: Das arktische Packeis mit Presseisrücken am geographischen Nordpol. Expeditionsteilnehmer entnehmen Luftproben mit Vakuumflaschen. 16. April, 1990. Photo: Lorenz.King@geogr.uni-giessen.de
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