num_pages: 192
description: Explore more than 50 of Minnesota and South Dakota's fascinating caves, mines, sinks and other underground oddities! This comprehensive guide covers Minnesota iron mines in the north and caves in the south. Also featured are gold mines and caves in the Black Hills of South Dakota, an area that boasts of some of the longer and more magnificent sites in the world. Spelunkers and explorers alike will enjoy this wonderful edition.
language: English
title: Minnesota Underground & the Best of the Black Hills: A Guide to Mines, Sinks, Caves, & Disappearing Streams
titlecomplete: Minnesota Underground & the Best of the Black Hills: A Guide to Mines, Sinks, Caves, & Disappearing Streams (Trails Books Guide)
ratings_count: 5
publisher: Trails Books