Rolling fields near Walla Walla in Washington State

The aera along the Washington and Montana border is gorgeous. Rolling corn and wheat fields as far as the eye can see, covering hills like a furcoat.
I remember seeing landscapes like these in Andalusia in southern Spain but not on such a scale. We stopped in Walla Walla and there was what I mistook for the mannequin or a farmer, complete with straw hat, white shirt and pants, red suspenders and a light yellow jacket standing in the scorching sun next to a barn. I approached to take a picture when he moved slightly. He was a real person but so well dressed and still that he was almost surnatural.