One of several bison herds that roam the park
One of the park's most extensive thermal areas is Norris Geyser Basin.
Various thermophilic algae and bacteria prefer different water temperatures, resulting in bands of growth, often with different colors.
Steamboat Geyser in one of its frequent minor eruptions
This geyser has rare and unpredictable major eruptions that can reach as high as 300 feet.
One of many thermal pools in Yellowstone
Another eruption of Great Fountain Geyser viewed from further away
A pair of Trumpeter Swans on the Yellowstone River
One of the frequent "bison jams"
A bull bison shedding its summer coat
Another bull elk
Sheepeater Cliffs
We had previously found Picas at the foot of this cliff
of basaltic columns, but none were seen this trip.
of basaltic columns, but none were seen this trip.
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