Take a train to Southern California, and you'll pass through Colton. Once the home of Gabrielino and Serrano Indians, Colton is now known as the "Hub City," the only place in the United States where the Union Pacific and the Burlington, Northern & Santa Fe railroads cross. Westward-bound rail passengers travel through the horseshoe-shaped valley along the same trails that served Spanish explorers journeying from Mexico to Monterey in the 1770s. The...