Triangulation, summit of Sultan Mountain. Silverton Quadrangle. San Juan County, Colorado. 517583

---

Size: 1985px × 1258px
Photo credit: © nsf / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 517583, archive, bygone, colorado., county, historic, history, juan, mountain., quadrangle., san, silverton, sultan, summit, triangulation, usa, vintage