The Cerro Gordo Mines are a collection of abandoned mines located in the Inyo Mountains, in Inyo County, California. Mining operations were undertaken from 1866 until 1957, producing high grade silver, lead, and zinc ore. Some ore was smelted on site, but larger capacity smelters were eventually constructed along the shore of nearby Owens Lake. These smelting operations were the beginnings of the towns of Swansea and Keeler. Most of the metal ingots produced here were transported to Los Angeles, but transportation difficulties hindered the success of the mines.