Historical Marker
The Idarado Mine
Historical marker location:
Ouray, Colorado
( Marker is on Million Dollar Highway (U.S. 550) 2 miles south of County Highway 31, on the left when traveling north.)
The town of Leadville, Colorado, located at an elevation of over 10,000 feet, was once the second-largest city in Colorado and home to the richest silver mine in the world. It also has the distinction of having the highest airport in North America, at an elevation of 9,927 feet.