Climax was an unincorporated mining village and a former U.S. Post Office located in Lake County, Colorado, United States. Climax is known for its large molybdenum ore deposit. Climax is located along the Continental Divide at an elevation of about 11,360 feet (3465 meters). It was the highest human settlement in the United States, and it holds the record for having had the country's second highest Post Office and the highest railroad station. The residential houses were all transported to the West Park subdivision of Leadville, Colorado, before 1965, leaving only the mining buildings standing.
After a 17-year shutdown, the Climax mine has reopened and resumed shipment of molybdenum on May 10, 2012.