Caldera Chronicles

Massive volcanoes dot the Cascade Range from British Columbia into Northern California, but what about the space in between the peaks? Volcanoes in...

Deformation of Earth’s surface can be very subtle.  Accurately detecting how the ground moves in the Yellowstone area requires the right frame of...

The are many types of fluids that flow between the deep mantle underlying Yellowstone National Park and the atmosphere above it. These fluids drive...

Sasquatch is a mythical creature with scant evidence to support its existence.  Likewise, eruptions from Black Diamond Pool since last July were...

Online sources are saying that animals are fleeing Yellowstone National Park.  This isn’t the first time such claims have been made. And just like...

Calculating earthquake magnitudes can be a challenge in places like Yellowstone, where lots of small seismic events can occur in rapid succession. But...

In April 2025, Yellowstone National Park geologists identified a new thermal feature in Norris Geyser Basin. Investigation of multiple data streams...

In geology, even small layers can tell big stories.  But figuring out the origins of such small layers can be a challenge, requiring careful mapping...

The recent death of a bison at Grand Prismatic Spring is an emphatic example of the danger posed by thermal areas in Yellowstone National Park.  But...

One hundred years ago, on June 23, 1925, a mountainside in the Gros Ventre Range in northwest Wyoming collapsed, unleashing one of the largest...

Is it safe to drink treated water from rivers in Yellowstone National Park?  Well, that depends on whether there are any nearby thermal features.

YVO just released an updated version of its response plan for geological hazards in Yellowstone National Park.  The plan describes how Yellowstone...

Continuous infrasound (low-frequency acoustic energy) monitoring is now established in Yellowstone.  And the method is detecting activity that goes...

YVO is pleased to announce the availability of a new static webcam that provides a current view of Black Diamond Pool in Biscuit Basin—site of a...

Yellowstone National Park contains the world’s largest concentration of geothermal features.  In fact, this is the primary reason it was set aside as...

The Yellowstone Plateau Volcanic Field has some of the largest rhyolite lava flows on Earth. Have you ever wondered what these flows look like in...

Yellowstone contains about 120 thermal areas that collectively are home to more than 10,000 thermal features, like hot springs and geysers. The exact...

New research used artificial earthquakes generated by a truck with a vibrating hydraulic plate to better understand the depth and characteristics of...

Yellowstone is most famous for huge explosive eruptions that create large calderas. Outside Yellowstone Caldera, however, there have been numerous...

Understanding the earthquake history of a region is key to estimating seismic hazard.  To help with this task, Geologists look for clues about...