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An Unusual Angle

An 18th century mapping error has made for a fishy bit of geography on the Minnesota-Canada border.


NASA Earth Observatory image by Jesse Allen, using VIIRS day-night band data from the Suomi National Polar-orbiting Partnership and Landsat data from the U.S. Geological Survey. Story by Mike Carlowicz.

Published November 12, 2017
Data acquired September 20, 2015

Sources:
Landsat 8 > OLI
Suomi NPP > VIIRS