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At Kīlauea Volcano's summit, inward slumping of the rim and walls of Halema‘uma‘u continues in response to ongoing subsidence. In this view to the southwest taken after this morning's event, a section of dark-colored wall rock (center left) has detached and dropped downward into the crater.

Lava from fissure 8 travels about 13 km (8 mi) down a well established channel (visible in the center of the image) to an ocean entry at Kapoho. Lava is building a seaward delta that is approximately 320 acres in size. The view is to the southwest with the Kapoho area in the lower right.

View of the active ocean entry in the vicinity of Vacationland. The interaction of hot lava with the ocean creates "laze", a corrosive seawater plume laden with hydrochloric acid and fine volcanic particles that can irritate the skin, eyes, and lungs, but that dissipates quickly with distance.

Scientists use a tool called an increment borer to remove cyllindrical tree cores from living trees. The cores show the tree's rings and help scientists learn about its growth.

Dr. Phillip van Mantgem cores a ponderosa pine (Pinus ponderosa) in Lassen National Park, CA.

Seen in this image is the acetolysis set up. Acetolysis is used to remove the genetic material from inside the pollen, which allows the scientists to better identify and count the pollen.

Photograph taken during helicopter overflight captures fissure 8 lava fountain.

This animated GIF shows a sequence of radar amplitude images that were acquired by the Agenzia Spaziale Italiana CosmoSkyMed satellite system. The images illustrate changes to the caldera area of Kīlauea Volcano that occurred between May 5 and June 14 at about 6:00 a.m. HST.

The ocean entry remains fairly broad with a white steam/laze plume blowing onshore. USGS image taken June 15, 2018.

Lava fountains from Fissure 8 reach heights of 200 ft overnight. The cinder and spatter cone that is building around the fissure is now about 165 ft at its highest point.

This image was taken through the eyepiece of a microscope. Pollen is mixed in with a few larger pieces of organic material.

A lab technician holds up the finished product after processing: an almost pure slide of pollen.

In the sample preperation room, a lab technician weighs sediments samples before placing them in a warming oven to dry.

A Tetons sunrise in Antelope Flats, Wyoming.                                         

Hydrologist Lauren Zinsser collects a periphyton sample from the lower Boise River in southwestern Idaho

Driftwood on the edge of a sandy beach, against the background of the Fire Island breach, with the other edge of the breach in the background.

The Fissure 8 viewed from the north at 7:50 AM. The cone is roughly 50 m (165 ft) high at is peak, and a plume of sulfur dioxide and other volcanic gases rises as an orange tinge from the erupting lava fountains (hidden within the cone). Lava is still flowing out of the ventunabated as a full channel.

Several laze plumes rise along the ocean entry margin as break outs feed many small and large flows. The largest Pāhoehoe breakout area is on the northern margin of the flow.

A close up view of the pāhoehoe breakouts along the northern ocean entry.