South Pass is Wyoming's primary source for gold and iron ore and represents a classical greenstone belt that has been intensely folded and faulted. The author spent 6 years mapping this complex terrain and found more than 100 gold anomalies as well as the tectonic control for ore shoots. In recent years, this terrain has become a popular place to search for gold deposits.

The book was published prior the the WGS providing ISBN numbers, but has remained one of the more popular books at the Wyoming Geological Survey. It is available at the WGS publications section.