This image shows a horse-mounted shepherd and a modest flock of sheep as they make their way along a country road, following a river canyon in the western United States.
The description states:
A WESTERN CANYON
Western canyons with their verdant foliage and shrubs are a welcome sight to the traveler and a paradise for sheep and cattle, a major industry in the west.
–Such sights are less common now that automobile traffic has increased even in rural areas, but much of the intermountain west is still very sparsely settled.
This image likely dates from the 1950s.