Images

National Park Service employee inspects a Plate Boundary Observatory strainmeter/seismometer station.

Beacon Rock (Washington), Boring Volcanic Field, is the central core of a cinder cone that remained intact after its carapace was stripped away by the Missoula Floods about 15,000 years ago.

Ken Honma, shown here in August 1973, repaired stations and replaced batteries at remote seismic stations to keep the USGS Hawaiian Volcano Observatory seismic network running smoothly.

Ken Honma, an electronics technician with the Hawaiian Volcano Observatory for almost 40 years, retired from the U.S. Geological Survey on July 31, 2010.

Lava exited the tube at the sea cliff and poured out onto the growing delta.

Mount Rainier Teacher's Workshop group photo, July 2010, Washington.

Page from Plan Your Trip to Mount Rainier, an outreach activity used during a teacher workshop.

In July 2010, lava erupted from Kilauea Volcano's east rift zone burned vegetation on the coastal plain as active flows advanced toward Kalapana Gardens, the same area inundated by lava flows in 1990. Two homes in the subdivision were destroyed by lava in 2010 -- one in July and one in November.

Pinnacles formed in Mazama pyroclastic flow deposit as erosion revealed fumarole chimneys that formed shortly after 7,700 ka eruption released gas, Crater Lake.

Crater Lake panorama seen from the lake's southern shore. Wizard Island is cone in western portion of lake. Oregon

Lava fountains up to 20 m (65 ft) high erupted from fissures on the north flank of Mauna Loa early Sunday morning, July 6, 1975. USGS photo.

On July 6, 1975, eruptive fissures opened along Mauna Loa

This thermal image shows the view of the Halema`uma`u vent from today's overflight. The kidney-shaped lava pond, about 90 meters long, is deep within the vent cavity. The mostly-crusted lava migrates from the north (right in this photo), where it upwells from depth, to the south, where is sinks back into the conduit.

Geologist taking a sample from a recently formed skylight on the Quarry flow lava tube. Samples collected directly from the lava tube are usually the best samples for chemical analysis.

Map showing the extent of the July 2007 eruption flow field relative to surrounding communities. Light red is the extent of the July 2007 eruption flow field. Reddish-brown is the extent of the currently-active Quarry flow as of July 8, 2010, while bright red shows the flow field expansion of the Quarry flow mapped by HVO geologists between July 8 and 14.

This image is a composite of a normal photograph and a thermal image, and shows the currently active flows coming down the pali towards the ocean. The active flow areas are shown as white and yellow, while older, cooler flows are shown by purple hues.

Lava flows are once again nearing the County viewing area at the end of Highway 130. The flow front is about one kilometer (0.6 mi) away, burning small patches of vegetation in its path.

The lava pond resides deep within the vent cavity in Halema‘uma‘u, at a depth of about 180 m (200 yards). Photograph taken from the former Halema‘uma‘u Overlook on June 20, 2010.

An aerial photo looking directly into a skylight that formed in the last 24 hours. This skylight is located at the top of one of the rootless shields on the upper flow field.

Geologist changing the data card from the time-lapse camera on the north rim of Pu'u 'Ö'ö cone.

View looking the opposite direction (toward the northwest) with the rootless shields field crossing the image just above center. The low rounded shield shape is not apparent at this slightly steeper angle. The terminus of the active flows is just above the lower right side of the photo.