Archive for the ‘Grinnell Formation’ Tag

Grinnell Formation   7 comments

The rocks of the Grinnell Formation contrast beautifully with the water in Montana's Glacier National Park. Tweeted by the US Department of the Interior, 9/16/14.

The rocks of the Grinnell Formation contrast beautifully with the water in Montana’s Glacier National Park. Tweeted by the US Department of the Interior, 9/16/14.

Posted September 17, 2014 by henrymowry in National Parks

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