Greg Brick PhdGreg Brick, PhD, was employed as a hydrogeologist at several environmental consulting firms and has taught geology at local colleges and universities. He has edited the Journal of Spelean History for the past dozen years. He has published more than oe hundred articles about caves and was the recipient of the 2005 Cave History Award from the National Speleological Society. His first book, Iowa Underground: A Guide to the State's Subterranean Treasures, was published by Trails Media Group in 2004. His second book, Subterranean Twin Cities, published by the University of Minnesota Press in 2009, won an award from the American Institute of Architects. 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. Read More Read Less