Greg Brick, Ph.D., was employed as a hydrogeologist and has taught geology at local colleges and universities. He has published more than 200 articles about caves and was the recipient of the 2005 Cave History Award from the National Speleological Society. His book, Subterranean Twin Cities, won an award from the American Institute of Architects and Minnesota Caves: History and Lore, was nominated for a Minnesota Book Award. His work has been featured in National Geographic Adventure magazine as well as on the History Channel. He has led guided tours of caves for the Minnesota Historical Society and the University of Minnesota College of Continuing Education.