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大峡谷国家公园

著名的科罗拉多大峡谷深约1500米，由科罗拉多河长年侵蚀而成，是世界上最为壮观的峡谷之一。大峡谷位于亚利桑那州境内，横亘了整个大峡谷国家公园。大峡谷的水平层次结构展示了20亿年来地球的地质学变迁，同时它也保留了大量人类适应当时恶劣环境的遗迹。

Grand Canyon National Park (United States of America) © Evergreen
参考: 75
注册时间: 1979
核心区: 493270.0000 Ha