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A man lays in a crevasse in a limestone rock wall formation. The formation has holes below where the man is laying.

A photograph of the Kaibab Suspension Bridge stretching across the Colorado River in the Grand Canyon. Two people stand on the bridge.

A man stands in front of cliff ruins, at the edge of a precipice.

Anasazi ruins in a cliff-face

Five horses and at least one human cross over the top of a sandstone ridge in partial silhouette.