Lake Valley, Sierra County, New Mexico

The mines produced well for a few years after miners tunneled into a silver-lined cavity they named the "bridal chamber" that alone yielded 2.5 million troy ounces (78 tonnes) of silver.

In 1881, a party of Lake Valley miners formed a posse to pursue a band of Apaches that had raided the town of Hillsboro.

Although a railroad line reached Lake Valley in 1884, the mines struggled and were worked only periodically into the 20th century.

Total production of the Lake Valley district through 1931 was 5.8 million ounces (180 tonnes) of silver.

Lake Valley is located in a structurally elevated fault block underlain mainly by Ordovician through Pennsylvanian sedimentary rocks; ore deposits are stratabound and confined to Lower Mississippian Lake Valley Limestone carbonate rocks.