I've seen that going down to Willamina before.Found a collaborating link from TV station near Willamette, OR.
http://katu.com/news/local/giant-smiley-face-planted-on-hillside-leads-to-lots-of-smiles-11-19-2015
Looks like the real thing on this link, the pic on original post is a different location or a photoshop based on the real deal.
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