Team of horses pulling fifteen tons of barley at an unidentified location, 1900-1910

Photograph of a team of horses pulling fifteen tons of barley at an unidentified location, 1900-1910. The ten horses (mules?) are at right and are headed to the right. The animals are hitched to a large wagon at left, and a man is sitting inside with a dog. Another man is riding a horse near the back of the team. There are at least two smaller wagons hooked up behind the front one. There are tall, brush covered mountains behind the wagon team, and a tall wooden post sticks up from the hillside at right.