tunneling through that rock instead of blowing it off the hill, was a lot of work for a cool looking tunnel. I wondered if it still existed, and after digging around online, got lucky and found out that it doesn't, it was destroyed when they made the road wider.

The Needle's Eye, Silver City - Clifton Highway, New Mexico

Clipping found in Arizona Republic in Phoenix, Arizona on May 21, 1963

https://dailytimewaster.blogspot.com/2016/03/friday-open-road.html
https://www.worthpoint.com/worthopedia/needles-eye-mule-creek-road-clifton-1832968248