アメリカ内務省のインスタグラム(usinterior) - 7月12日 23時50分

When you think about national parks, do you imagine majestic mountains, towering forests, vibrant wetlands or vast canyons? How about sand dunes? Great Sand Dunes National Park & Preserve in #Colorado often gets visitors whose first comments are, "I had no idea this existed." A combination of opposing winds, a huge supply of sand from ancient dry lakebeds and the sand recycling action of several creeks helped create the tallest dunes in North America. There are other dunes in the U.S., but none as tall and none as dramatic. Photo @GreatSandDunesNPS by Patrick Myers, #NationalPark Service. #GreatSandDunes #usinterior

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• GreatSandDunesNPS