Lightning strikes above the Fan and Mortar geysers in Yellowstone's Upper Geyser Basin. Geysers are formed when underground water meets superheated rock and blasts back out through a narrow hole.

The impressive part is seeing this geyser come to life as it can send water 200 feet into the air! Average temperature: 196 ...

Stepping into Yellowstone is like stepping back into history, a place where the natural beauty and wonder were recognized as treasures worth protecting. From bubbling geysers to sweeping ...

Catherine Parker Old Faithful may be Yellowstone's most well-known geyser, but the Norris Geyser Basin is home to the park's oldest (thermal features are said to have been present here for more ...

From my cabin window in Teton Valley, Idaho, real life looks like this: There is a snow-covered meadow, and beyond that a stand of bare gray aspen trees, and beyond that a spill of sun-stunned ...

Visitors will find a coffee bar just inside. – Catherine Parker This world-renowned geyser is a must-see for every Yellowstone visitor. Although it isn't the largest active geyser in the world ...

George Marler takes the temperature of a pool at the base of Giant Geyser in the 1950s. (Photo from the Yellowstone Research Library) George D. Marler (1898–1978) was a Yellowstone National ...

YELLOWSTONE NAT'L PARK, Wyo. - A magnitude 3.9 earthquake occurred near Norris Geyser Basin in Yellowstone National Park on January 28 at about 6:00 p.m. MST. The United States Geological Survey ...