The geothermal areas of Yellowstone National Park include several geyser basins as well as other geothermal features such as hot springs, mud pots, and fumaroles. The number of thermal features in Yellowstone is estimated at 10,000. Although famous large geysers like Old Faithful are part of the total, most of Yellowstone's geysers are small, erupting to only a foot or two. The hydrothermal system that supplies the geysers with hot water sits within an ancient active caldera. Many of the thermal features in Yellowstone build up sinter, geyserite, or travertine deposits around and within them. Wikipedia
The American bison are the largest terrestrial animals in North America. They are cloven hooved ungulates, and are similar in appearance to other bovines such as cattle and true buffalo. They are broad and muscular with shaggy coats of long hair. Adults grow to approximately 660 lb in smaller cows, up to 2,200 lb in large bulls. Bison are nomadic grazers and travel in herds. The Yellowstone Park bison herd is the oldest and largest public bison herd in the United States. Wikipedia
Yellow Jammers are antique buses used at Yellowstone National Park to transport park visitors on specialty tours. They were manufactured as the Model 706 by the White Motor Company from 1936-1939. The distinctive vehicles, with roll-back canvas convertible tops and wood body, were the product of noted industrial designer Alexis de Sakhnoffsky, and originally operated in seven National Parks. Yellowstone National Park still operates seven of their original buses today. Yellowstone's seven buses were restored in 2007 by TransGlobal. The bodies were removed from their original chassis and built upon modern Ford E-Series van chassis. The original standard transmissions were also replaced with newer automatics, removing the trademark "jamming" sound.
