The above photograph is one of several taken by Timothy O’Sullivan over a hundred years ago giving rare views of the Old West. You can find a number of them at the Daily Mail website.
What I found interesting about the above photograph were the conditions under which it was taken. According to the caption:
Silver mining: Here photographer Timothy O’Sullivan documents the actvities of the Savage and the Gould and Curry mines in Virginia City, Nevada, in 1867 900ft underground, lit by an improvised flash—a burning magnesium wire, O’Sullivan photographed the miners in tunnels, shafts, and lifts. During the winter of 1867-68, in Virginia City, Nevada, he took the first underground mining pictures in America. Deep in mines where temperatures reached 130 degrees, O’Sullivan took pictures by the light of magnesium wire in difficult circumstances.
Another of my favorites is this view of Paiute Indians taken near Cottonwood Springs, Nevada (in Washoe County).
I recommend you view the website when you get a chance.