Yellowstone National Park is the oldest and largest national park in the United States, located in the western United States. Spanning across Wyoming, Montana, and Idaho, the park covers an area of 8,991 square miles.

Yellowstone is one of the most active volcanic regions in the world. The park is home to over 10,000 active geothermal features, including geysers, hot springs, travertines, and fumaroles.

Yellowstone is also home to a diverse array of wildlife. The park is home to 67 species of ungulates, which migrate between different ecosystems and share different habitats. These species include bison, elk, wolves, grizzly bears, black bears, and pronghorns.

Yellowstone National Park is one of the most popular tourist destinations in the world.

The park welcomes over 4 million visitors each year. Yellowstone is one of the most active volcanic regions in the world. The geothermal features in the park are located on top of the Yellowstone Caldera, a massive volcanic structure.

The Yellowstone Caldera is approximately 70 miles in diameter. The caldera was formed by an eruption that occurred about 640,000 years ago. The geothermal features in Yellowstone are caused by the heat of the magma below the surface. This heat causes groundwater to heat up and evaporate. The steam then rises through cracks in the ground, forming geysers, hot springs, travertines, and fumaroles.

Yellowstone is home to a diverse array of wildlife. The park is home to 67 species of ungulates, which migrate between different ecosystems and share different habitats.

These species include bison, elk, wolves, grizzly bears, black bears, and pronghorns. Yellowstone is also home to a variety of bird species, with over 300 species recorded in the park.

Yellowstone is the first national park in the United States. The park was established on March 1, 1872, by President Ulysses S. Grant. The park's establishment began with the exploration of John Colter, a fur trapper, in 1807.

Colter shared stories of Yellowstone's natural wonders with European settlers, which led to the park's establishment.

Yellowstone National Park is one of the most popular tourist destinations in the world. The park welcomes over 4 million visitors each year. Visitors come to Yellowstone to explore the park's natural wonders. Popular activities include hiking, biking, fishing, camping, and other outdoor activities.

Yellowstone is one of the most active volcanic regions in the world. The park is home to over 10,000 active geothermal features.

Yellowstone is home to a diverse array of wildlife. The park is home to 67 species of ungulates. Yellowstone is the first national park in the United States.

The park was established on March 1, 1872, by President Ulysses S. Grant. Yellowstone is one of the most popular tourist destinations in the world. The park welcomes over 4 million visitors each year.