Yellowstone National Park

Yellowstone National Park is a protected area in the western United States known for extensive geothermal features, diverse wildlife, and a volcanic landscape shaped by a large active caldera.

Yellowstone Caldera: A volcanic depression formed by a major eruption and collapse of the ground above a magma reservoir. Its underlying volcanic system supplies heat to the park’s geysers and hot springs.
Indigenous peoples of Yellowstone: Native peoples with longstanding cultural, economic, and spiritual connections to the Yellowstone region. Their histories in the region extend far earlier than the park’s establishment.
Yellowstone National Park bison: A free-ranging bison population that lives in and around Yellowstone National Park. Managing bison migration beyond park boundaries involves wildlife conservation and disease concerns.
National park: A protected area established by a government to conserve natural or cultural resources and provide public access. Yellowstone helped establish the national park as a conservation model.
Yellowstone hotspot: A persistent source of magma beneath the North American Plate that has produced a chain of volcanic regions. It explains the volcanic activity beneath Yellowstone and the region’s older volcanic track.
Lewis and Clark Expedition: A United States expedition that explored the Louisiana Purchase and the Pacific Northwest from 1804 to 1806. Its members gathered early American accounts of the region, though they did not reach Yellowstone’s main geothermal areas.
Yellowstone wolf reintroduction: The 1995–1996 return of gray wolves to Yellowstone after their local eradication. The reintroduction became a prominent test case for restoring predators to an ecosystem.
Yellowstone fires of 1988: The extensive wildfires that burned Yellowstone National Park in 1988. Their scale challenged public expectations about fire and the appearance of a healthy park.
Geyser: A hot spring that intermittently ejects water and steam when underground pressure builds. Yellowstone contains the world’s largest concentration of geysers.
Washburn–Langford–Doane Expedition: A 1870 expedition that explored and documented parts of the Yellowstone region. Its reports helped build public and political support for protecting Yellowstone.

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