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The Argo Tunnel was part of the precious metal mining operations in Gilpin and Clear Creek County during the late nineteenth century. At more than four miles long, it connected a host of gold mines between Central City and Idaho Springs before it was shuttered following an accident in 1943.
Location:
Idaho Springs
Place:
Central Mountains
Clear Creek County
Date:
September 5, 2011
Source:
Flickr
Copyright Notes:
Creative Commons