Yellowstone National Park, known for erupting geysers like Old Faithful, is home to one of earth’s largest volcanic systems ... massive enough to fill the Grand Canyon with lava and ash within ...

Formed over thousands of years of erosion caused by hydrothermal activity, water and other natural forces, the Grand Canyon of the Yellowstone ... its many colors and rock formations.

Scientists have assessed Yellowstone's chances of eruption by measuring electronic currents flowing deep within the Earth ...

Photograph by Michael Nichols with Ronan Donovan and the National Park Service Left: Yellowstone National Park. Grand Canyon of the ... yet still active volcano. Someday it will erupt again ...

The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory ... valleys with steep canyon walls where rocks are exposed ...

Canyon Lodge is the largest National Park Service lodge in Yellowstone National Park, with more than 500 rooms and cabins available. Canyon Lodge is located in the Heart of Yellowstone and is ...

Two gigantic canyons on the moon — both deeper than the Grand Canyon — were carved in less than 10 minutes by floods of rocks traveling as fast as bullets, a new study finds. Scientists ...

Firehole Canyon Drive stands out since it takes visitors past a waterfall and to a Yellowstone swimming hole ... Firehole Canyon Drive is situated off of Grand Loop Road. The seasonal 2-mile ...