Triangulation, summit of Sultan Mountain San Juan County, Colorado (1874 — stereoscopic view) Photo credit: U.S. Geological Survey
Do you want to see many dozens more of these wonderful images? Of course you do. You can thank me after visiting the US Geological Survey page on Flickr here.
Thank you, Mitch. Stereoscope????
Yep, stereoscope. I did a double-take as well when I saw them, especially knowing just how heavy all that gear was at the time.
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Wow, this is fantastic. I live in the Colorado Springs area myself so seeing pictures from El Paso County was great 🙂
Agreed! We used to own property down in the San Juan mountains and always enjoy seeing historical photos from that area.
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