アメリカ内務省のインスタグラム(usinterior) - 5月24日 09時48分

Why are the #BlueRidge Mountains blue? The trees growing along the ridgelines produce high levels of a compound call isoprene. The isoprene hovers around the thickly forested #mountains like a haze and scatters the different wavelengths of light. Human eyes detect the short blue wavelengths easier, so we see more blue. It’s science! And the effect is gorgeous. Photo from the Craggy Gardens area of the Blue Ridge Parkway (@BlueRidgeNPS) in #NorthCarolina by Swapnil Kekre (www.sharetheexperience.org, @swapnilkekrephotography). #FindYourPark #usinterior #travel

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• BlueRidgeNPS