The Rock / Gray Gold
In 1872 Silas Madge pried loose some of the gray, buff, and pink rocks from a prominent mesa on his ranch and sent them to mineral experts in Denver. The stone proved to be a superlative building material-weather resistant, exceptionally strong for its weight, and easily cut. Madge capitalized on the discovery with a profitable but backbreaking quarry just south of Castle Rock. When two other quarries opened nearby, the town and county profited from the industry. Builders used the rock for prominent commercial and residential buildings in Denver, Colorado Springs, and Pueblo, and as far away
The Rockies Explode by Jan Vrieson. An artist’s rendering of a cloud of superheated ash spewing toward Castle Rock from a distant, prehistoric volcanic eruption. All rights reserved, Image Archive, Denver Museum of Nature and Science. In the early decades of the twentieth century, motorists enjoyed touring Perry park Ranch to view the dramatic hogback formations.
Photo courtesy Denver Public Library.
Colorado Historical Society
Location. 39° 22.347′ N, 104° 51.611′ W. Marker is in Castle Rock, Colorado, in Douglas County. Marker is on Wilcox Street just from 3rd Street, on the right when traveling south. Touch for map. Marker is in this post office area: Castle Rock CO 80104, United States of America.
Other nearby markers. At least 8 other markers are within 6 miles of this marker, measured as the crow flies. Good Roads in Colorado / The Great North-South Highway (here, next to this marker); Keystone Hotel
Categories. • Industry & Commerce • Natural Features •
Credits. This page was last revised on July 6, 2017. This page originally submitted on August 15, 2011, by Charles T. Harrell of Woodford, Virginia. This page has been viewed 797 times since then. Photos: 1, 2. submitted on August 15, 2011, by Charles T. Harrell of Woodford, Virginia. 3, 4. submitted on July 1, 2017, by Mark Hilton of Montgomery, Alabama. • Bill Pfingsten was the editor who published this page.