Minnesota's caves have a deep history. Carver's Cave is the first to be described in the literature of North America after explorer Jonathan Carver visited it i

This new and completely updated edition by co-authors Doris Green and Greg Brick, PhD, invites readers to consider a different angle for their next Minnesota tr

In Subterranean Twin Cities, geologist, historian, and urban speleologist Greg Brick takes us on an adventurous, educational, and-thankfully-sanitary journey be

This book discusses the karst and pseudokarst of the Upper Midwest, USA, consisting of the states of Minnesota, Wisconsin, Iowa, and Illinois—the first region

Have you ever wondered how the Mississippi River was formed? Or why shark teeth have been found in the Iron Range of the Upper Midwest? Towering mountain ranges