Geothermal Features and Hydrothermal Basins
Yellowstone contains thousands of hydrothermal features, including geysers, hot springs, mudpots, and fumaroles. The most famous area is the Upper Geyser Basin, home to Old Faithful, which erupts roughly every 90 minutes.
Mountains, Canyons, and Forests
The park is dominated by broad valleys, forested plateaus, and rugged mountain ranges such as the Absaroka Range. The Grand Canyon of the Yellowstone features steep canyon walls, waterfalls, and the Yellowstone River cutting through ancient basalt flows.
Wildlife and Open Grasslands
Large meadows and river valleys support herds of bison, elk, and pronghorn, often seen against a backdrop of conifer forests and distant peaks. Predators such as wolves and grizzly bears inhabit the more remote, forested sections.
For a detailed overview of Yellowstone's geography and features, visit the official National Park Service page at Yellowstone Geology.
