Firehole River, Midway Geyser Basin, Yellowstone NP
Firehole River, Midway Geyser Basin, Yellowstone NP
Firehole River, Midway Geyser Basin, Yellowstone NP
Run-off from Excelsior Geyser into Firehole River, Yellowstone NP
Excelsior Geyser, Midway Geyser Basin, Yellowstone NP
Excelsior Geyser, Midway Geyser Basin, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Thermophile Ribbons, Midway Geyser Basin, Yellowstone NP
Grand Prismatic Thermophiles, Yellowstone NP8
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Grand Prismatic Spring, Yellowstone NP
Opal Pool, Midway Geyser Basin, Yellowstone NP
Turquoise Pool, Midway Geyser Basin, Yellowstone
Turquoise Pool, Midway Geyser Basin, Yellowstone
Silhouettes against Grand Prismatic Spring, Yellowstone NP
