Penut Lake and Crested Butte beyond.
Penut Lake, a stone's throw from Crested Butte, is a reclamation project. In 1904 anthracitic coal was mined here, the coal cleaned on-site before being loaded onto a train. The mine finally closed in 1955. In the 1960's a hard rock mill was erected at the old mine site, and it processed silver and other ores mined nearby until the mid-1970's. Challenging reclamation issues resulted from the combination of mixed waste products (coal refuse and hard rock mill tailings) located on site.