Nankoweap-Ruinen, Grand Canyon, Arizona – Dan Leffel/Photolibrary ©

Nankoweap-Ruinen, Grand Canyon, Arizona – Dan Leffel/Photolibrary ©

Nankoweap-Ruinen, Grand Canyon, Arizona – Dan Leffel/Photolibrary ©

Nankoweap-Ruinen, Grand Canyon, Arizona – Dan Leffel/Photolibrary ©

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