Catherine Parker Old Faithful may be Yellowstone's most well-known geyser, but the Norris Geyser Basin is home to the park's oldest (thermal features are said to have been present here for more ...

This is a bathymetric map of the West Thumb Basin showing numerous mapped active or inactive hydrothermal ... Similar changes occurred in the late 1980s and early 1990s and were associated with ...

There's so much to see and do in Yellowstone that it's hard to know where to even begin! Not to worry, I've put together all ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Pat Shanks and Lisa Morgan ...

(Pat Shanks/U.S. Geological Survey) West Thumb Geyser Basin, along the southwest shore of West Thumb Basin in western Yellowstone Lake, is one of Yellowstone’s most scenic and interesting ...

The Back Basin is home to Steamboat Geyser, which is the tallest active geyser in the world. But even being active, it still ...

Sitting in the heart of Yellowstone's West Thumb area is Yellowstone ... including West Thumb Geyser Basin (the largest geyser basin on the shores of the lake). Early summer visitors saw remnants ...

Visitors line a boardwark in the Midway Geyser Basin at Yellowstone National Park on May 29, 2017. (Photo by Neal Herbert/National Park Service) People visit Yellowstone National Park every year ...

The Grand Prismatic Spring is located in the Midway Geyser Basin and aside from being the largest in the United States, it's also the third largest in the world. It is around 110 m in diameter and 50 ...

Canyon wolf pack in Lower Geyser Basin; Jim Peacock; February 2015. (Image courtesy Yellowstone National Park ... she said. A map showing the current WMU 313 (top) and the former WMUS 313 and ...