アメリカ内務省さんのインスタグラム写真 - (アメリカ内務省Instagram)「The jaw-dropping beauty at Great Sand Dunes National Park and Preserve in Colorado stays with you long after you leave. The sandy slopes have been building and drifting for hundreds of thousands of years, telling a story of constant change. #GreatSandDunes protects the tallest dunes in North America, with the legendary Star Dune towering at 755 feet. Hiking the dunes is one of the most popular park activities, but there are also opportunities to stargaze and hear the sand "sing", and photograph the incredible natural beauty of the area. Photo @greatsanddunesnps by Rick Vega (www.sharetheexperience.org). #USinterior #RecreateResponsibly #FindYourPark」7月31日 9時05分