Amvik eBook Solutions

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

Take a mysterious and fascinating tour through Iowa's underground treasures. This guide will reveal the state's subterranean attractions including show and wild

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

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

Adventure writer Griffith recounts riveting and life-threatening tales of exploration in the limestone caves of southeastern Minnesota and the man-made caves of