- Location
- Mainly Wyoming, extending into Montana and Idaho
- Landscape type
- High volcanic plateau, forests, river valleys and geothermal basins
- Natural features
- Geysers, hot springs and mudpots produced by heat from an underlying volcanic system, plus canyons and waterfalls on the Yellowstone River.
- Flora and fauna
- Bison, elk, bears, wolves and a range of birds; lodgepole pine forest and meadow vegetation.
- Seasons and visiting
- Roads and facilities open on a seasonal schedule, with heavy snow in winter. Verify current access before travelling.
- Safety
- Thermal ground can be thin and dangerously hot; stay on boardwalks and marked trails.