At Mammoth Hot Springs, a rarer kind of spring is born when the hot water ascends through the ancient limestone deposits of the area instead of the silica-rich lava flows of the hot springs common elsewhere in the park.
The results invoke a landscape that resembles a cave turned inside out, with its delicate features exposed for all to see.
Sprinkled amid the hot springs are the rarest fountains of all, the geysers.
What makes them rare and distinguishes them from other hot springs is that somewhere, usually near the surface in the plumbing system of a geyser, there are one or more constrictions that prevent water from circulating freely to the surface where heat would escape.
The deepest circulating water can exceed 199°F, the surface boiling point. As the water rises, steam forms. Tremendous amounts of steam force water out of the vent, and an eruption begins. Water is expelled faster than it can enter the geyser's plumbing system, and the heat and pressure gradually decrease. The eruption stops when the water reservoir is depleted or when the system cools
The human history of the Yellowstone region goes back more than 11,000 years.
From about 11,000 years ago to the very recent past, many groups of Native Americans used the park as their homes, hunting grounds, and transportation routes.
The first people of European descent found their way into the park about 200 years ago.
In 1872 a country that had not yet seen its first centennial established Yellowstone as the first national park in the world.
A new concept was born and with it a new way for people to preserve and protect the best of what they had for the benefit and enjoyment of future generations .
Works Cited "Grand Canyon of Yellowstone National Park - AllYellowstonePark.com." Yellowstone National Park Vacations, Lodging, Old Faithful - AllYellowstonePark.com . N.p., n.d. Web. 1 Oct. 2011. <http://www.yellowstoneparknet.com/canyon_vill age/grand_canyon.php>. "The Grand Canyon of the Yellowstone Tours." Yellowstone Online Tours . N.p., n.d. Web. 1 Oct. 2011. <mms.nps.gov/yell/features/canyontour/index.htm >. "Yellowstone National Park (U.S. National Park Service)." U.S. National Park Service - Experience Your America . N.p., n.d. Web. 1 Oct. 2011. <http://www.nps.gov/yell/index.htm>.