Three Apaches race to stay ahead of a dust devil, the desert hot-weather whirlwind full of dust and debris. These ethereal pillars of air and dirt have meandered the baked earth since the oceans first receeded. The white man speaks of thermals and explains them in dry meteorological terms, but the Apache knew better. He knew that the devil was inside the whirlwind and that if you were caught you would soon die. Howard Terpning created a strong feeling of motion to convey the sense of the Apaches galloping their horses as hard as they could, emphasized by this awe-inspiring composition.