National Geographic Travelのインスタグラム(natgeotravel) - 7月19日 06時20分

Photo by @taylorglenn // The mysterious moving rocks of Death Valley National Park’s Racetrack playa. For years people were stumped as to how this phenomenon occurs. In basic terms the conditions have to be a perfect combination of precipitation to leave behind enough water, which then freezes, and if there is enough wind the rocks will begin to move across the playa creating these trails in the softened surface. This all happens over very long periods of time and is extremely rare to see. According to the folks at Death Valley NP a team of scientists did in fact witness this happening, solving a decades old mystery. Worth a read in detail on the @deathvalleynps website. Just another mind blowing thing to learn about on our wonderful planet. Follow @taylorglenn for more from our national parks and beyond #geology #deathvalley #california

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