| Welcome
aboard our virtual field trip to explore fire and the role it plays
in the Yellowstone ecosystem. Many people think of fire as bad,
especially when it threatens lives or property. But naturally occurring
fires - those not started by humans - are neither good
nor bad. They are a part of nature.
Historically in Yellowstone National Park, fire
has swept through the park's low elevation grasslands every 25-60
years. The forests in the center part of the park have burned every
250-400 years. Fire records kept in Yellowstone since 1931 show
that an average of 22 wildfires are started each year by lightning.
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