These photos are from my hike of the Upper Geyser Basin in Yellowstone National Park, a geyser-rich geothermal area that includes the Old Faithful, Beehive, and Castle geysers, along with more than four-hundred others. As I may have mentioned in previous posts, walking among all of these cones, boiling springs, bursting geysers, and steam plumes really drives home the reality that you are standing on top of a super volcano. I didn’t have time to explore the entire basin, but I saw a good portion of it. Toward the end of my hike I caught the eruption of the Lion Geyser from a distance, documented in a couple of the photos.
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Castle Geyser (background), Lion Geyser group (foreground)
Lion Geyser (left)
Sleeping bison.
Boiling water in geyser.
Spasmodic Geyser
Firehole River and geysers in background.
Firehole River, geysers, and Old Faithful Lodge
Firehole River and numerous geysers visible along the banks.
Boiling hot spring.
Castle Geyser
Hot spring.
Castle Geyser
Castle Geyser with boiling smaller geyser in foreground.
Eruption of Lion Geyser.
Eruption of Lion Geyser.
A brief green respite before hitting the mostly barren basin.
Hot spring with Old Faithul Inn in the background.
Old Faithful between eruptions.
Castle Geyser
Beehive Geyser
Minor eruption (foreground), Firehole River (background)
Castle Geyser and Firehole River
Michael Rappa 