 From 1829–30, Mexican traders from New Mexico established the routes that came to be called the Old Spanish Trail trade route to California.The first of these, Armijo's route, intercepted the Mohave's trail at the mouth of the Mojave River near Soda Lake.Subsequently in 1830, the Mohave's trail became part of what became the Main Route or Central Route of the Old Spanish Trail, linking up with it from the north west of the Colorado River in Piute Valley and following it westward to the link up with Armijo's route at the Mojave River mouth, and later with a shortcut from Salt Spring through Bitter Spring and Spanish Canyon at a point just east of Yermo.