Ice core facility in Lakewood, Colorado

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Curator Richard Nunn cuts an ice core sample at the NSF Ice Core Facility.

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Greenland ice core sample from 1,840 meters below the surface. This sample is about 16,000 years old, but the oldest sample at the NSF Ice Core Facility is 4,200 years old from the Vostok region of Antarctica.

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23,000 meters of ice core samples are stored at the Denver Federal Center in a -40 degree warehouse

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NSF Ice Core Facility building at the Denver Federal Center

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Curator pulls an ice core sample from the archive at the National Science Foundation Ice Core Facility in Lakewood, Colorado

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Ice core facility in Lakewood, Colorado

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