<p>An unpaved road curves through a desert landscape of tall cacti and rocky mountains. A 1950s truck is stopped on one side of the road and a couple stands on the other side, looking at an interpretive marker.</p>
<p>Visitors stopped at an interpretive post on Ajo Mountain Drive, undated photo. Likely taken in 1957 after the road was extended to its current 21-miles but before 1958 when the road was redirected to give cars a more direct view of the Ajo Mountains, specifically the arch before Estes Canyon.</p>
NPS
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