Minnesota Underground: A Guide to Caves & Karst, Mines & ...
Green, Doris / Brick, Greg
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 trip. It guides travelers to the state's publicly accessible caves, former mines, and other subterranean treasures. Whether you are a sport caver, hiker, photographer, teacher, historian, or vacationer, this guide offers unique travel destinations, suggests possible study projects, and po...