Written by Mark Stelten, deputy scientist-in-charge at the Yellowstone Volcano Observatory, the post analyzes the v olcano's ...

Shortly after Castle Geyser, turn right toward Crested Pool and Sawmill Geyser. Afterward, take another right toward Geyser ...

If you really enjoyed Old Faithful's eruption and would like to see more, know that Riverside, Daisy, Grand and Castle ... Geyser Basin is about 32 miles southeast of the west entrance of Yellowstone.

Lightning strikes above the Fan and Mortar geysers in Yellowstone's Upper Geyser Basin. Geysers are formed when underground water meets superheated rock and blasts back out through a narrow hole.

Yellowstone National Park Smithsonian American Art Museum Landscape Study Yellowstone National Park Smithsonian American Art Museum Castle Geyser Cone, Yellowstone National Park Smithsonian American ...

The world’s tallest geyser — Steamboat Geyser in Yellowstone National Park — sprang to life this week for the first time in several months. It reportedly began erupting shortly after 8:30 a ...

West Thumb Geyser Basin, along the southwest shore of West Thumb Basin in western Yellowstone Lake, is one of Yellowstone’s ...

Marvel at the famously reliable Old Faithful, which erupts every 90 minutes, as well as geysers such as Beehive, Castle ... West Thumb Geyser Basin – the largest geyser basin in Yellowstone ...

Geyser watchers and park visitors are amused by Steamboat’s spectacular eruptions that can shoot water, steam, mud, and rock 300 feet or more into the air. The world’s tallest geyser ...

Visitors hacked off pieces of geyser formations to take home as souvenirs, while hunters slaughtered the park's elk. Superintendent Langford was conspicuous by his absence, visiting Yellowstone ...