Picacho and the Cargo Muchachos: Gold, Guns, and Geology Eastern Imperial County, California: SDAG 2011 Annual Field TripThe subtitle says it all about the harsh, raw beauty of a little known but intriguing corner of the vast California desert. Its beckoning red and purple landscapes are bounded on the east by "Old Red," the Colorado River, and on the west by the Algodones sand dunes, one of the largest sand dune complexes in North America. A drive of less than three easy hours on I 8 from San Diego brings the explorer to the ancient portals of the southeastern