Black and grizzly bears are roaming throughout the park--near roads, trails and in backcountry areas. Hikers and backcountry users are advised to travel in groups of three or more, make noise and carry bear spray. Visitors must stay 100 yards from bears.
Geology Web Videos
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Introduction to Teton Geology
Learn about the geologic forces that continue to change the dramatic scenery of Jackson Hole. Find out why the Teton Range rises abruptly from the valley and how the Teton fault and glacial ice shape the landscape.
Motion on the Teton fault began about 10 million years ago lifting the mountains skyward and hinging the valley down. It is only a matter of time before another earthquake lifts the mountains and drops the valley floor.
Did you know that the bark on Aspen trees looks green because it contains chlorophyll? Aspen bark is photosynthetic, a process that allows a plant to make energy from the sun, and helps the tree flourish during the short growing season.