Helvetia Camp
Helvetia Camp, basin and mines. Crest of Santa Rita Mountains in background. Looking east from ridge of Tiptop Mountain, at an elevation of 4,300 feet. From left starting at second peak in upper left, thru the center of the following mine locations are identified: Heavy Weight, Copper World, Mohawk, Leader, Isle Royal, Old Dick, and Omega. Pima County, Arizona. 1909. [Photo via Wikipedia]
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