Rolf Gradinger works on an ice core while Mette Nielson takes measurements on a core already brought to the surface.

Image ID: expl0425, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Beaufort Sea, North of Point Barrow, Alaska
Photographer: Jeremy Potter
Credit: Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration.

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