I propose as a Singular Exploration to learn Spanish by self-study, language school instruction, and immersion, to enable me to learn firsthand the geological hazards in Guatemala and in turn to teach rural Guatemalans how to avoid the worst impacts of these hazards. This new ambition arises from the confluence of a recently acquired very personal awareness of the truly catastrophic effects of geological hazards on people living in poverty in rural Guatemala, and my professionally challenging need to retool to teach a class outside my specialty that I have not taught in years. My current research focus is on the structural geology of various complexly-deformed regions in North America, and this foray into environmental geology is a reconnection to past non-research, pre-Ph.D. expertise. The newness of this project extends further than geologic knowledge outside my specialty, however, in my plan to teach in a language new to me and to a rural semi-literate audience with a very large stake in understanding what I have to share with them - quite in contrast to my Denison students. Professionally, I hope to acquire language skills and local area knowledge sufficient to establish a useful connection with the Guatemalan national geological survey and other academics that might result in my further collaboration on environmental hazards and other geological issues, and in one or more geology student field trips to Guatemala. I will also use this experience to instill an international component in my teaching of Environmental Geology at Denison on my return from sabbatical.