アメリカ内務省のインスタグラム(usinterior) - 10月2日 08時54分

Looming over the majestic dunes at Great Sand Dunes National Park and Preserve in #Colorado, the Sangre de Cristo Mountains are putting on their #autumn decorations. From a distance, groves of quaking aspens stand out in patches of orange and gold. Remarkable trees, they grow in clusters where they get lots of sunshine. Often creating new trees from a huge system of roots, a stand of aspens can be a single organism, each tree genetically identical. Individual trees may live up to 150 years, but the parent root system may be up to one million years old. Isn’t that incredible? Photo by Patrick Myers, National Park Service. #usinterior #RecreateResponsibly

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