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Simplified map of Arizona and western edge of New Mexico, showing the location of the Uinkaret, San Francisco, and Springerville volcanic fields as shaded gray areas as well as the locations of Flagstaff, Springerville, and Phoenix for reference. The Colorado Plateau is shown in a light orange color.
Simplified map of Arizona and western edge of New Mexico, showing the location of the Uinkaret, San Francisco, and Springerville volcanic fields as shaded gray areas as well as the locations of Flagstaff, Springerville, and Phoenix for reference. The Colorado Plateau is shown in a light orange color.
View from a research camera installed at Biscuit Basin near the site of seismic, infrasound, and GPS monitoring. The camera has a view of Black Diamond Pool, where a hydrothermal explosion occurred on July 23, 2024, as well as of the area north of the pool where another small explosion occurred on June 13, 2026. Camera images are updated every 15 minutes
View from a research camera installed at Biscuit Basin near the site of seismic, infrasound, and GPS monitoring. The camera has a view of Black Diamond Pool, where a hydrothermal explosion occurred on July 23, 2024, as well as of the area north of the pool where another small explosion occurred on June 13, 2026. Camera images are updated every 15 minutes
Camera installed at the Biscuit Basin monitoring site. The camera is near the top of a small tower that holds a weather sensor and solar panel that powers nearby seismic and acoustic sensors. The solar panel that powers the camera is located on the ground at the base of the tower. USGS photo by Mike Poland, July 22, 2026.
Camera installed at the Biscuit Basin monitoring site. The camera is near the top of a small tower that holds a weather sensor and solar panel that powers nearby seismic and acoustic sensors. The solar panel that powers the camera is located on the ground at the base of the tower. USGS photo by Mike Poland, July 22, 2026.
Black Sand Pool, in Yellowstone National Park's Upper Geyser Basin. The hot spring is known for it's thumping behavior, which occurs every few minutes due to collapse of bubbles within the spring. The thumping is strong enough to be heard and felt by anyone nearby. USGS photo by Mike Poland, July 21, 2026.
Black Sand Pool, in Yellowstone National Park's Upper Geyser Basin. The hot spring is known for it's thumping behavior, which occurs every few minutes due to collapse of bubbles within the spring. The thumping is strong enough to be heard and felt by anyone nearby. USGS photo by Mike Poland, July 21, 2026.
Google Earth image of the newly proposed Idaho Volcanic Field, with recent eruptions indicated, and Craters of the Moon lava field. Major city centers surrounding the volcanic field are included to provide spatial context.
Google Earth image of the newly proposed Idaho Volcanic Field, with recent eruptions indicated, and Craters of the Moon lava field. Major city centers surrounding the volcanic field are included to provide spatial context.
Aerial view of the Black Diamond Pool area of Biscuit Basin, Yellowstone National Park, showing the locations of northern, middle, and southern vent groups that formed as a result of a small hydrothermal explosion on June 13, 2026. The "new pool' developed later, between June 14 and 16.
Aerial view of the Black Diamond Pool area of Biscuit Basin, Yellowstone National Park, showing the locations of northern, middle, and southern vent groups that formed as a result of a small hydrothermal explosion on June 13, 2026. The "new pool' developed later, between June 14 and 16.
Long before explosive eruptions formed the Yellowstone Caldera and heat from the magmatic system began feeding a dynamic hydrothermal system, there was the Absaroka volcanic range. Remnants of the rugged terrain are still visible on the east and north sides of Yellowstone National Park.
Long before explosive eruptions formed the Yellowstone Caldera and heat from the magmatic system began feeding a dynamic hydrothermal system, there was the Absaroka volcanic range. Remnants of the rugged terrain are still visible on the east and north sides of Yellowstone National Park.
Over the past few decades, an area on the north rim of Yellowstone Caldera has risen and fallen. Just last year a new period of uplift in this area began!
Over the past few decades, an area on the north rim of Yellowstone Caldera has risen and fallen. Just last year a new period of uplift in this area began!
On June 13, 2026, Yellowstone National Park’s newest geophysical monitoring sites captured a small hydrothermal explosion in Biscuit Basin! That story is the subject of this month’s video update.
On June 13, 2026, Yellowstone National Park’s newest geophysical monitoring sites captured a small hydrothermal explosion in Biscuit Basin! That story is the subject of this month’s video update.
This video is from the Biscuit Basin camera, which is located on the boardwalk adjacent to Black Diamond Pool (the blue-water feature in the foreground) and looking to the north. Black Diamond Pool was the site of a hydrothermal explosion on July 23, 2024, and the pool has erupted numerous times since that event.
This video is from the Biscuit Basin camera, which is located on the boardwalk adjacent to Black Diamond Pool (the blue-water feature in the foreground) and looking to the north. Black Diamond Pool was the site of a hydrothermal explosion on July 23, 2024, and the pool has erupted numerous times since that event.
Video from a research and monitoring camera located at Biscuit Basin, Yellowstone National Park, recorded between 05:09:45 and 05:10:15 a.m. MDT on June 13, 2026. Black Diamond Pool, site of a hydrothermal explosion on July 23, 2024, is steaming in the foreground. At about 05:09:50 a.m.
Video from a research and monitoring camera located at Biscuit Basin, Yellowstone National Park, recorded between 05:09:45 and 05:10:15 a.m. MDT on June 13, 2026. Black Diamond Pool, site of a hydrothermal explosion on July 23, 2024, is steaming in the foreground. At about 05:09:50 a.m.
Summer is here, and millions of people will be visiting Yellowstone National Park. People with questions. What is this scat I’m seeing? How does a geyser erupt? What makes Yellowstone so special?
Where’s the bathroom?
Summer is here, and millions of people will be visiting Yellowstone National Park. People with questions. What is this scat I’m seeing? How does a geyser erupt? What makes Yellowstone so special?
Where’s the bathroom?
The camera view is east-southeast from the seismic/infrasound monitoring station in Biscuit Basin, Yellowstone National Park.
The camera view is east-southeast from the seismic/infrasound monitoring station in Biscuit Basin, Yellowstone National Park.
The camera view is north-northwest from the Biscuit Basin boardwalk looking at Black Diamond Pool, which is in the foreground (the tilted viewing angle is due to the slope of the boardwalk).
The camera view is north-northwest from the Biscuit Basin boardwalk looking at Black Diamond Pool, which is in the foreground (the tilted viewing angle is due to the slope of the boardwalk).
This static image is from a USGS Cascades Volcano Observatory research camera located at the Johnston Ridge Observatory, north of Mount St. Helens. The view is to the south. This camera is intended to assist the USGS with situational awareness. At times, clouds, rain, and snow obscure visibility.
This static image is from a USGS Cascades Volcano Observatory research camera located at the Johnston Ridge Observatory, north of Mount St. Helens. The view is to the south. This camera is intended to assist the USGS with situational awareness. At times, clouds, rain, and snow obscure visibility.
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.