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U.S. National Natural Landmarks
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Mark locations listed as part of the National Natural Landmarks Program.
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NN141.3 km

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U.S. National Natural LandmarksAncient River Warren Channel

in U.S. National Natural Landmarks

Ancient River Warren Channel has now filled in and is the Minnesota River.

posted by: Groundspeak Premium Member MNSearchers

location: South Dakota

date approved: 6/2/2006

last visited: 6/12/2017

Premium Member Downloads: download.GPX Lite File       download.LOC File       download .KML File (Google Earth)