Hidden Feature (IMAGE)

Columbia Climate School

Hidden Feature

Caption

Using geophysical instruments, scientists have mapped a huge ancient lake basin (outlined here in red) below the Greenland ice, covering about 2,700 square miles). Redder colors signify higher elevations, green ones lower. A stream system incised into the bedrock that once fed the lake is shown in blue.

Credit

Adapted from Paxman et al., EPSL, 2020

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