Day #66 Outcrop: Devils Tower

Continuing our tour of igneous exposures of the Black Hills, today’s can genuinely be called an outcrop. And what an outcrop it is! Devils Tower, the hero of Steven Spielberg’s Close Encounters of the Third Kind is a commonly cited example of a volcanic neck (questionable), and a spectacular example of columnar jointing (unquestionable).

Suddenly I have a craving for mashed potatoes…

Devils Tower, Morning Light

Fallen Column (foreground) and Intact Columns (above)

Porphyritic Phonolite (closeup)

Explore this and all of my 2010 Deskcrops and Outcrops in Google Earth!

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