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Yellowstone Snowmobile
About Yellowstone Snowmobile
About Snowmobiling
A snowmobile is a land vehicle propelled by track at the rear and ski(s) up front for steering. Early snowmobiles used rubber tracks, however a modern snowmobile will have a track made of a kevlar composite. They are designed to be operated on snow and ice, and require no road or trail. Most snowmobiles are typically powered by two-stroke gasoline/petrol internal combustion engines. Four-stroke engines are becoming more and more popular in snowmobiles.
Summertime occupations for snowmobile enthusiasts can also involve drag racing on grass, asphalt strips, or even across water. People who ride them commonly are known as snowmobilers. The three main types of riding are Snowcross/racing, trail riding and mountain climbing.
Reference: Wikipedia