Minnesota Underground & the Best of the Black Hills A Guide to Mines, Sinks, Caves, & Disappearing Streams

When author Doris Green isn't writing, she is underground exploring. She is also the author of Underground Wisconsin, as well as the writer and editor of a variety of publications. Green holds a masters degree in journalism and mass communications from the University of Wisconsin-Madison. She and her husband live in a log house overlooking the Wisconsin River, south of Spring Green, Wisconsin.Green, Doris is the author of 'Minnesota Underground & the Best of the Black Hills A Guide to Mines, Sinks, Caves, & Disappearing Streams' with ISBN 9781931599245 and ISBN 1931599246.