Images

Steamboat Geyser in the steam-phase of an eruption on June 4, 2018, Norris Geyser Basin, Yellowstone National Park.

Large hydrothermal explosion craters shown with black dot and leader plus associated breccia deposits in Yellowstone National Park (locations from

Looking west over The Gap subbasin of Norris Geyser Basin, Yellowstone National Park, from a vantage point on the Ragged Hills. The mountain in the distance is Mt. Holmes. Photo taken in June 2018 by Lauren Harrison. 

Red circles represent all seismicity and blue circles represent earthquakes as part of earthquake swarms. The size of the circles is scaled to the magnitude of the earthquake. The 630,000 year old Yellowstone caldera is shown as a bold black line within Yellowstone National Park. Mapped faults are shown as light gray lines.

Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of Yellowstone National Park. National Park Service photograph by Jacob Frank.

This map shows the Grand Loop Road along with different versions of the Howard Eaton Trail. Over the years, sections of the trail were rerouted to improve visitor safety, reduce maintenance costs, and protect sensitive natural areas. Using National Park Service and USGS sources from 1923, 1937, 1956, 1958, and 1959, students E.

Map showing volcanoes that formed at the leading edge of the Yellowstone hotspot in the past several million years.  (A) Map of northwest Wyoming, eastern Idaho, and southern Montana (modified from Brueseke et al., 2017, https://doi.org/10.1130/GES01553.1).  Upper Wind River Basin (UWRB) is depicted by dashe

Grant Village boat dock, on the West Thumb of Yellowstone Lake, where a water-level sensor measures the level of the lake. Photo by David Mencin (EarthScope Consortium).

The head of an immature wetsalts tiger beetle at the entrance to the burrow it dug. Photo by Robert K. D. Peterson, 2017.

Steam-driven vents on the floor of Yellowstone Lake in the Deep Hole, east of Stevenson Island. Image acquired by the Global Foundation for Ocean Exploration ROV Yogi in August 2017.

Dr. Jacob Lowenstern, Scientist-in-Charge of the Yellowstone Volcano Observatory during 2002-2017. In this photo, he's leading a field trip in Yellowstone National Park with a group of international volcanologists. 

Time series of vertical displacements during April–October 2017 at four GPS stations (LAK1, LAK2, LKWY, and SEDG) on the north side of Yellowstone Lake. Downward trends indicate subsidence and upward trends show uplift. Uplift “spikes” in late September are related to inclement weather and do not show true deformation. Error bars are one standard deviation.

Photograph showing roadcut exposure of Huckleberry Ridge Tuff and Mesa Falls Tuff along U.S. Route 20 between Ashton and Island Park, Idaho. This exposure is approximately 60 feet high.

Field crew from Oregon State University and University of Wisconsin-Madison install a magnetotelluric site within Yellowstone National Park. 

Changes in snow conditions at a gravity station in Yellowstone National Park in 2017. Each photo is taken from about the same location in May, July, August, and October of that year. The red circle in the May photograph shows the location of the gravity station in this area, which is near Craig Pass, a few miles southeast of Old Faithful.

Map of gravity stations measured in 2017 in Yellowstone National Park. Yellow lines are roads, dashed line marks the caldera boundary, black line outlines Yellowstone National Park, green circles note resurgent domes, and red dots are gravity stations.

WorldView-2 natural-color satellite image from December 9, 2017, showing thermal areas as snow-free zones on the north side of Mallard Lake resurgent dome in Yellowstone National Park.

Echinus Geyser in eruption on October 24, 2017.  Photo by MA Bellingham, used with permission.

Sunset lake in Black Sand Basin of Yellowstone National Park

View of the Silver Gate landslide complex from Bunsen Peak in Yellowstone National Park.  The landslide originates from Terrace Mountain.

A weir constructed by Irving Friedman and Dan Norton to measure water discharge and to monitor changes in hydrothermal activity on a tributary flowing into Boundary Creek in southwest Yellowstone National Park. USGS photo by Shaul Hurwitz, September 17, 2017.