Yellowstone: Pictures of hot springs and geysers

In Yellowstone National Park you can find the majority of the world’s geysers: Old Faithful, Castle, Grand and Steamboat are the most popular Geysers of Yellowstone. Other attractions are the hot springs and pools. Minerals and thermophilic algae and bacteria give the pools a colorful look. The origin of the hot water phenomena is a giant volcano. The Yellowstone volcano is a caldera volcano, which is known for its massive eruptions.

The National Park was founded in 1872 and was America’s first national park. The park prevents some of the largest populations of grizzly bears, wolves and herds of elk and bison.

I visited the Yellowstone two times: in 1991 and 2007. Here are the pictures of my last journey.