Add Yahoo as a preferred source to see more of our stories on Google. This is a photograph of Twin Buttes in Lower Geyser Basin looking to the northwest, with Excelsior Geyser of Midway Geyser Basin ...

Yellowstone National Park is noted for the geothermal marvels, but it is the threat below ground that holds the attention. Events such as the Black Diamond Pool explosion and current seismic activity ...

As a tour group in Yellowstone National Park approached the Excelsior Geyser, it came upon the unusual sight of a park ranger with a fishing rod casting into the steaming spring pool as tourists ...