For more than thirty years Tom Prisciantelli has driven the roads and hiked the trails of the American West. In his first book, "Spirit of the American Southwest," he explored along hiking trails the geology of the Southwest and the arrival of the Native American's ancestors. From that exercise he was fascinated by a particular chapter in the geology lesson he learned on the road: that dealing with volcanoes. His research for this book took him along that path. The author and his wife live in a solar-powered adobe home in northern New Mexico, in full view and respect for one of the volcanoes about which this book was written.