Teton Pass is the crossing from Jackson Hole west into Pierre's Hole (Teton Valley, Idaho). It is the standard auto-route proxy for whichever pass Colter actually used over the Tetons. WY-22 / ID-33 is paved today and crosses at 8,431 ft.
The pass and the valleys on either side were known and named by Shoshone and Bannock long before either Colter or the modern road. 'Pierre's Hole' is fur-trade English; the Indigenous names for Teton Valley persist locally.
By 1832, Pierre's Hole was the site of one of the largest fur-trade rendezvous in Rocky Mountain history — and the violent rendezvous that closed it. Trail Creek and the pass became a regular crossing during the rendezvous decade.
WY-22 climbs from Wilson, WY (just west of Jackson) up Trail Creek to the summit, then drops down to Victor, ID. ID-33 continues west to Driggs and Tetonia. The pass closes intermittently in winter; in heavy snow years it can close for days. The modern road is the closest paved approximation of any 1807 crossing of the Tetons.
Whether Colter crossed the Tetons at this exact saddle or via one of several alternates (Conant Pass to the north, or one of the lower routes). The 1814 Clark map shows him crossing the range but the depiction is schematic.
WY-22 / ID-33 is the only paved Teton crossing. Summit pullouts on the Idaho side give the photogenic view back to the Grand. The Teton Valley town of Driggs, ID is the western anchor — and the home of the Colter Stone exhibit at the Teton Valley Historical Museum, the next stop on this profile loop.
Phase 3 target: 360° at the WY-22 summit pullout; alternate at the Idaho-side overlook.
Sources & attribution: Wyoming DOT · Idaho Transportation Department · Teton Valley Historical Museum