Greg A. Brick

Greg Brick was employed as a hydrogeologist at several environmental consulting firms and has taught geology at local colleges and universities. He mapped thousands of springs around the state for the Minnesota Spring Inventory at the Department of Natural Resources. His books include Iowa Underground, Minnesota Underground (with Doris Green), Minnesota Caves, Subterranean Twin Cities, and Caves and Karst of the Upper Midwest USA (co-edited with Calvin Alexander). His work has been featured in National Geographic Adventure magazine as well as on the History Channel.