Locals know it simply as "the pass"--big enough to include several cities and towns, state parks and Indian reservations, the Colorado Desert and the travels of every golfer, movie star, tycoon, president, camper, trucker, sun-worshiper, and everyday Joe who ever buzzed to and from Palm Springs and Los Angeles. In Riverside County between "Old Grayback," also known as Mount San Gorgonio, rising to 11,804 feet on the north in the San Bernardino Range, and Mount San Jacinto topping out at 10,804 feet to the south, the people down inside the San Gorgonio Pass have seen them all come and go, from...