In prehistoric times this was a natural watering place, as evidenced by artifacts found here. It was later used by Indians and Spaniards on roads from northern Mexico. As Maravillas Creek developed from a draw into a water channel, the old water hole vanished. About 1900, rancher George Miller dug two wells and erected twin windmills, after which the site was called Double Mills. It became a campsite for ranchers driving cattle and horses from Mexico or the Chisos Mountains to the railroad at Marathon, and also for wagon trains carrying ore and for U.S. troops on border duty.