Unidentified river winding through what appears to be a desert valley, ca.1950

Photograph of an unidentified river winding through what appears to be a desert valley, ca.1950. Piles of dark boulders stand at along a cliff in the foreground with the river at center in the land below. The river is lined with plots of sand which are surrounded with jagged rock walls on either side. Further down, the river winds through smooth fields until it reaches the faint mountain side in the distance.