It has been well visited since early times, as evidenced by smoothing
of the rock walls in places where people continually touch as they
pass through, Hidden Valley Trail, South Mountain Park, Arizona
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| HIKER IN HIDDEN VALLEY TUNNEL - #3122 |
| The eastern entrance to Hidden Valley is through this natural tunnel. It has been well visited since early times, as evidenced by smoothing of the rock walls in places where people continually touch as they pass through, Hidden Valley Trail, South Mountain Park, Arizona |
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| More images at ZULLO PHOTOGRAPHY |