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Grand Canyon is composed of a wide variety of rock types that respond differently to forces of erosion. Rock layers vary in thickness and composition, resulting in 6 geologically distinct sections. Please make sure that whatever you bring in goes out with you when you leave.

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Grand Canyon is composed of a wide variety of rock types that respond differently to forces of erosion. Rock layers vary in thickness and composition, resulting in 6 geologically distinct sections. Please make sure that whatever you bring in goes out with you when you leave.

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