In 1982, brothers Troy and Powell “Gil” Gillenwater walked across Arizona. They weren’t chasing fame or following a mapped route because there wasn’t one. What began as a homegrown adventure became an internal journey that reflected the rugged beauty of the Southwest. Accompanied by two mules, a stray dog, and a handful of topo maps, they faced snowstorms, irate ranchers, mule mishaps, a closed passage through the Grand Canyon, and the constant challenge of finding water.