Mark McFaddan grew up in a southern Idaho farming family where he developed an early and deep appreciation for natural systems and the outdoors. He taught a wide variety of undergraduate geology classes over more than thirty years, first at the University of Idaho and later at North Idaho College, where he retired in 2017. Mark worked for the Idaho Geological Survey many summers mapping Idaho's geology from the Canadian border to the central mountains. He now resides in the Bonners Ferry area of North Idaho with his wife, Linda. After running hundreds of field trips with geology students of all ages, he can now be glimpsed fly fishing–and still looking at rocks.