P1150787
The Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park. The caldera…
P1150784
Volcanism at Yellowstone is relatively recent, with calderas created by large eruptions that took place 2.1 million, 1.3 million, and 640,000 years ago. The…
P1150785
Over the past 16.5 million years or so, this hotspot has generated a succession of explosive eruptions and less violent floods of basaltic lava.
P1150786
Together these eruptions have helped create the eastern part of the Snake River Plain (to the west of Yellowstone) from a once-mountainous region.[8] At least a…
Tower Fall
Tower Fall is a waterfall on Tower Creek in the northeastern region of Yellowstone National Park. Approximately 1,000 yards (910 m) upstream from the creek's…
Tower Fall
Its name comes from the rock pinnacles at the top of the fall. Tower Creek and Tower Fall are located approximately three miles south of Roosevelt Junction on…
Calcite Springs
About halfway up the canyon walls of the Yellowstone River, and easily visible across the river from the road (especially from the Calcite Springs overlook),…
Calcite Springs
These are lava flows known as the basalt of the Narrows and that erupted about 1.3 million years ago—roughly the same time as the formation of second cycle…
Petrified Log
The petrified trees of Yellowstone are remarkable for several reasons. First is the sheer volume—it's one of the largest deposits of petrified wood found…