El Camino Real, The Royal Road (a foot trail) connected the Spanish Mission plantations on the west coast of Mexico, now partly California. The natives were worked to death in exchange for salvation. In places, roads and state highways that parallel the path are called El Camino Real, or El Camino Real Highway. Bells about a mile apart served as a security measure. Someone who was injured, or attacked could attempt to reach the nearest bell and ring it to summon help. I don’t know if it ever really worked. It might have summoned more bandits. Travel was really dangerous before the railroads; armed guards were a good idea.