The light-colored area at the left-center is the Main Terrace, which formed along the principal fissure of the Steamboat Springs geothermal field. The N-S-trending fissure deposited siliceous sinter from hot waters that issued from surface faults and traveled down slope towards U.S. Highway 395, which cuts diagonally across the bottom of the photo. The linear structure at the right-center is the power generating plant of the geothermal field. Out of view below the trees at the lower left is the Steamboat Resort, which dates back to the 1860s.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

This image is made available under the Public Domain Dedication CC0 license, but proper attribution is appreciated.

Steamboat Springs