• The Cathedral Group from the Teton Park Road

    Grand Teton

    National Park Wyoming

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  • Seasonal road closures in effect

    Seasonal road closures are in effect for motorized vehicles. The Teton Park Road is closed from the Taggart Lake Trailhead to the Signal Mountain Lodge. The Moose-Wilson Road is closed from the Granite Canyon Trailhead to the Death Canyon Road. More »

  • Avalanche hazards exist in the park

    Avalanche hazards exist in the park, especially in mountain canyons and on exposed slopes. A daily avalanche forecast can be found at www.jhavalanche.org or by calling (307) 733-2664. More »

  • Bears emerging from hibernation

    Bears are beginning to emerge from hibernation. Travel in groups of three of more, make noise and carry bear spray. Visitors must stay at least 100 yards from bears. More »

Mystery of the Colter Stone

John Colter Stone with name John on stone

The Colter Stone, discovered near Tetonia, Idaho in 1933, is a piece of rhyolite carved in the shape of a human head. It is engraved on one side with the name “John Colter”, on the other side is the year “1808”. If authentic, it represents the only solid proof of the route followed by trapper and explorer John Colter.

Colter explored the greater Yellowstone area during the winter of 1807-8, perhaps the first white man to do so. His route, however, is uncertain as no clear maps or records exist. Colter set out from a fur trapping fort in present-day southern Montana and headed south to near today’s Cody, Wyoming. On his return he passed through what is now Yellowstone National Park. The middle section of his journey is a matter of conjecture. One theory indicates he traveled via Togowtee Pass. The other commonly held view traces Colter’s route through Jackson Hole, over Teton Pass, and north along the west side of the Teton Range. No evidence exists to substantiate either route. The only available sources of information are vague accounts and maps derived from interviews with Colter after his return.

Thus, the significance of the Colter Stone becomes clear. The location of its discovery, the west side of the Teton Range, would prove that John Colter had traveled the Teton Pass route. But the Stone has not been fully authenticated, so the Colter Stone remains a fascinating piece of the puzzle yet to fit into the mystery of John Colter’s pioneering sojourn through this region.

Did You Know?


Did you know that pronghorns are the fastest mammals in the western hemisphere? They can run up to 70 mph, but do not like to jump fences! In the summer, pronghorn live along Antelope Flats Road, but in fall they migrate almost 200 miles to central Wyoming.