The Perigo Mine is located in the Gamble Gulch Mining District, four miles southwest of Rollinsville in Gilpin County, Colorado. The mine is located in a relatively remote, densely forested area within the boundaries of the Arapaho and Roosevelt National Forests. However in the late 19th century, the Perigo townsite was a busy gold mining town with approximately 300 residents and several prosperous mines, including the Perigo Mine. Mining continued through the 1940's with no documented evidence of mining since.
Without active maintenance, the Perigo mine adit collapsed. The mine continues to discharge acidic water with a pH ranging from 3.1 to 4.0 and at an observed rate between 50-500 gallons per minute into Gamble Gulch, a tributary to South Boulder Creek.
