Lower Geyser Basin from Great Fountain Geyser
By Yellowstone Volcano Observatory
1959 (approx.)

Detailed Description
View of Lower Geyser Basin. Note active thermal pools (Great Fountain Geyser) in the foreground with thermal grasslands—kept treeless by hot soils—and lodgepole pine forest in the distance. Photo by George Marler, 1959.
Sources/Usage
Public Domain.