Images

Mount Konocti, the most distinct volcanic feature of the Clear Lake Volcanics as viewed to the west from Cinder Cone.

Lahars pick up material as they travel, which can cause damage to structures in their path. Damage here from Mt. Pinatubo, Philippines.

Queen's Laundry bathhouse, in the Lower Geyser Basin of Yellowstone National Park.  Building began under superintendent Philetus Norris in 1881 but was never finished.

Lassen Peak's Devastated Area photographed from the air in 1994.

Two bubble bursts explode simultaneously as a consequence seawater mixing with lava in a lava tube beneath surface of a lava delta. Because of the confined conditions in the lava tube, explosive pressures build up as water, heated by contact with molten lava, expands instantly to steam.

Hummocks on West Island, Alaska, 8 km (5 mi) WNW from Augustine Volcano summit. These small hills were deposited as part of the 1883 debris avalanche (landslide) that triggered a Cook Inlet tsunami.

Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.

USGS hydrologist Michael Sorey tries to locate the steam vent at a fumarole in the Bumpass Hell area in Lassen Volcanic National Park.

Steamboat Geyser in the steam-phase of an eruption on June 4, 2018, Norris Geyser Basin, Yellowstone National Park. Photo by Jamie Farrell (University of Utah).

Portion of the Geologic map of the lower East Rift Zone of Kīlauea Volcano, Hawai‘i by Moore and Trusdell (1991), showing the southeastern part of the Leilani Estates subdivision. Some geologic units depicted here are now buried by 2018 lava flows; a red star marks the location of fissure 8.

Scientists from the U.S. and Philippines install a new seismic station after 15 June 1991 eruption of Mount Pinatubo, Philippines.

Ashfall over palm trees at Clark Air Force Base, Pinatubo Volcano, June 22, 1991.

Dead bird in substantial ash from the eruption of Mount Pinatubo, Philippines, 1991.

Car hood with heavy ash from Mount Pinatubo volcano, 1991.

Ashfall from Pinatubo, June 17, 1991.

The collaborative work of scientists from the USGS and the Philippine Institute of Volcanology and Seismology (PHIVOLCS) saved more than 5,000 lives and \$250 million in property by forecasting the eruption of Mount Pinatubo in time to evacuate local residents and the U.S. Clark Air Base.

The June 12, 1991 eruption column from Mount Pinatubo taken from the east side of Clark Air Base.

View southeast from Overlook Cabin looking over the Valley of Ten Thousand Smokes. The pyroclastic and ash deposits that fill the valley remain nearly vegetation-free more than 100 years after the 1912 Novarupta-Katmai eruption.

Cinder cones at the summit of Mauna Kea. Mauna Kea is a dormant shield volcano on the north end of Hawaii Island. Astronomical observatories in the foreground.

Lava flows from the Pu‘u‘ō‘ō eruption entered the town of Kalapana in 1990 and buried many homes, historic sites, and a black sand beach. This photo shows a home that was ignited by a lava flow and burns in Kalapana, Hawai'i. USGS photo by J. Dvorak.

USGS geochemist Cathy Janik (left) and Iceland Geosurvey chemist Jón Örn Bjarnason (right) collect a gas sample from a fumarole in Lassen Volcanic National Park.