This is an image of a tree which has self-seeded within the folds of a rock and succeeded in growing to early maturity in the normally inhospitable ground. The tree is near the town of Buford, Wyoming

The caption on the back states:
No. 5402 – Tree growing out of solid rock along the Lincoln Highway (U.S. 30) on Sherman Hill between Cheyenne and Laramie, Wyoming.

The tree, identified as a Limber Pine, was apparently first approached in 1867 when the railroad was built to bypass it, and since then Highway 30 and now Interstate 80 pass by the site, which has been preserved and can be visited from Interstate 80 at a small rest stop.

This image likely dates from the 1950s.