US Department of the Interior @Interior
Visitors to @NCascadesNPS frequently ask the rangers, “Why is Diablo Lake that color?” During the summer, ice melt and erosion of the mountains, bring glacial flour into the lake. This fine rock flour refracts the sunlight and turns the lake turquoise. Pic by Alisha Clarke https://t.co/pNqhfRzU2N — PolitiTweet.org