How good to discover this is now on Goodreads. I loved this book. Margaret Murray has succeeded in mating the world of fast-paced Silicon Valley technology with a predecessor world as ancient and basic as a sandstone formation. We Californians secretly live in both natural and high-tech environments by turns, but it took this fictional expedition by Murray's characters to meld them in a truly innovative adventure.Tony Hillerman's recommendation, "Don't miss it," was absolutely correct.