U.S. Geological Survey:
How High? Thiiiiiis High!
U.S. Geological Survey:
Lava Spattering
U.S. Geological Survey:
Mount St. Helens Eruption — 1980
U.S. Geological Survey:
Steam Fumarole Field
U.S. Geological Survey:
Akutan Hot Springs
U.S. Geological Survey:
Spattering at Kilauea
U.S. Geological Survey:
Kilauea Lava Lake
U.S. Geological Survey:
#TBT — Hawaii Volcanoes National Park (1969-1971)
U.S. Geological Survey:
#TBT : Volcanic Roadblock
U.S. Geological Survey:
Augustine Eruption 2006
U.S. Geological Survey:
Echinus Geyser in Norris Geyser Basin, Yellowstone National Park
U.S. Geological Survey:
Hawaiian Getaway
U.S. Geological Survey:
Vanuatu Eruption
U.S. Geological Survey:
Close Encounters of the Lava Kind
U.S. Geological Survey:
#TBT Mount St. Helens north flank at timberline 50 years ago, Skamania County, Washington. August, 1964.
U.S. Geological Survey:
Mount Rainier
U.S. Geological Survey:
We Have a Lava Love for Ya!
U.S. Geological Survey:
Gates of Okmok
U.S. Geological Survey:
Grand Prismatic Spring
U.S. Geological Survey:
Olaf the Geologist
U.S. Geological Survey:
Mauna Loa: A Stirring Giant?
U.S. Geological Survey:
The Heat is On
U.S. Geological Survey:
Kilauea Eruption 1960
U.S. Geological Survey:
Geothermal Energy Sources
U.S. Geological Survey:
Happy Anniversary Hawaii
U.S. Geological Survey:
Yellowstone National Park
U.S. Geological Survey:
It's Just a Little Heat, That's All
U.S. Geological Survey:
Mount Shasta
U.S. Geological Survey:
Lava Bomb
U.S. Geological Survey:
Sunrise over Yellowstone Lake
