National Geographic Travelのインスタグラム(natgeotravel) - 12月13日 00時25分

Photo by @kristarossow. Why so blue? The almost surreal blue of Crater Lake in Oregon is caused by the incredible purity of the water, which is all from rain and snow run-off. The pure water absorbs the other colors from the spectrum aside from the blues which reflect back to create the amazing color we see. #Oregon

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