The Devil’s Slide formation is a parallel set of limestone traces tilted to the vertical and eroded down the center to produce a channel. The formation is more massive than the picture implies, being hundreds of feet in length with the channel more than 20 feet wide.
“C.T. Art Colortone” Sanborn Souvenir Co., Inc., Denver, Colo.
The description states:
1278 — THE DEVIL’S SLIDE NEAR THE UTAH — WYOMING BORDER IN WEBER CANYON ON THE U. P. RAILROAD AND HIGHWAY U. S. 30
–Highway 30 has been replaced with Interstate 84, and there is a turnout area for visitors to stop and view the formation at their leisure. The card likely dates from the 1940s.