Home to some of the most unique geothermal features in all of North America, Yellowstone National Park is a true treasure.

JACKSON — The Porkchop Geyser in Yellowstone National Park’s Norris Geyser Basin was once a small hot spring, a blue pool that occasionally erupted. But in 1985 the geyser changed: The Porkchop began ...

Yellowstone National Park's tallest and most infamously unpredictable geyser erupted Monday for the first time since the fall of 2003. Steamboat geyser at Norris Geyser Basin erupted at around 2:40 ...

An unusual detective story involves some veteran geologists at Yellowstone National Park, a spectacular geyser that seems to erupt only when no one's around, and two witnesses who stumbled onto an ...