Yellowstone National Park Environment

Fires have always occurred periodically in the Yellowstone ecosystem. Records kept since 1930 show that lightning starts an average of 22 fires each year. Vegetation in the Greater Yellowstone Ecosystem has adapted to fire and in some cases is dependent on the removal of the forest overstory to become established. Other plants growing on the forest floor are adapted to survive at a subsistence level for long periods of time until fires open the overstory.

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Featured Park
Rising above a scene rich with extraordinary wildlife, pristine lakes, and alpine terrain, the Teton Range stands monument to the people who fought to protect it. These are mountains of the imagination. Mountains that led to the creation of Grand Teton National Park where you can explore over two hundred miles of trails, float the Snake River or enjoy the serenity of this remarkable place.
Featured Wildlife
The pika is a close relative of the rabbits and hares, with two upper incisors on each side of the jaw, one behind the other. Being rock-gray in color, pikas are seldom seen until their shrill, metallic call reveals their presence.