大峡谷国家公园，亚利桑那州 Grand Canyon National Park, Arizona, 2005
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大峡谷的一个巨石上，雨后形成的一个水池倒映出峡谷和天空。如一个长了数条肢体的巨人般，大峡谷是地球上最大的峡谷之一，它横贯亚利桑那州北部达277英里（合446公里），最宽的地方宽度达18英里（合29公里），最深的地方深度达6000英尺（合1800米）。过去的六百万年里它被科罗拉多河一分为二，其显露在外的岩层详细地记述了北美洲将近20亿年的地质历史内容。
图片为国家地理杂志2006年1月《意想不到的峡谷》一文而摄，未刊发，图文据此编写。
Photo by Michael Nichols
A pool of rainwater in a Grand Canyon boulder reflects canyon and sky. A writhing giant with scores of limbs (some still unnamed), the Grand Canyon slices 277 miles (446 kilometers) through northern Arizona, extending 18 miles (29 kilometers) at its widest point and 6,000 feet (1,800 meters) at its deepest—one of Earth's largest canyon systems. Cut by the Colorado River in the past six million years, it exposes rock strata that detail nearly two billion years of North America's geologic history.
Text adapted from and photo shot on assignment for, but not published in "The Unexpected Canyon" January 2006, National Geographic magazine
（翻译：心远）