A few months ago, on a trip back from the Imperial Sand Dunes, I saw an unassuming sign for Desert View Tower near Jacumba, California (about 1.5 hours west of San Diego). High above Interstate 8 towered a, well, stone tower. I had to know more. We didn’t get far down the exit road before we hit another dimension with Coyote and his alien entourage. But that’s another story you can read about here. Once we came back down to earth, we continued to the tower. It was large, with a wider circle at the base and a giant rainbow…