Walking alone, and with one lung (the other lost to cancer), Edie Littlefield Sundby became the first person in history to walk the 1,600-mile El Camino Real de las California's mission trail through the mountain wilderness of Mexico and one of the hottest deserts on earth, and across the border to Northern California. This book is a first-hand account of harrowing adventure along the old Jesuit mission trail in Baja California Mexico - desert heat and cold, walls of cactus, sleeplessness, hunger, both physical and spiritual exhaustion, the dangers of wild creatures, and encounters with drug smugglers and weeks with no water other than what a pack mule could carry; a trek Edie made six months after losing her right lung to cancer – a journey that restored health and spirit after fighting recurrent stage 4 cancer.