In the days before trains, planes, and 4x4s, the Rubicon trail was no more than a Maidu Indian footpath between Lake Tahoe and California's San Joaquin Valley. Around 1867, pioneers John and George Hunsucker built the first cabin at Rubicon Springs. With the invention of the horseless carriage, it didn't take auto adventurers much time to shoehorn the first car to the springs in 1908 (using ropes and planks to cross difficult sections). In the early '50s, military surplus jeeps found their way to Rubicon Springs under the denim pockets of a group of returning veterans. And the rest is history.