Signal Mountain is a 7,720-foot isolated summit in Grand Teton National Park whose separation from higher peaks gives it sweeping views of the Teton Range, northern Jackson Hole, and the Snake River. Unlike the nearby Tetons, it formed from volcanic ashfall tied to the Yellowstone hotspot and from a glacial moraine left by a glacier moving south from the Yellowstone icecap, the same glacier that helped create Jackson Lake. Access includes a 5-mile road to an observation area below the summit and the 6.8-mile Signal Mountain Trail, which climbs to Jackson Lake Overlook and is reserved for hikers, while the road is also favored by cyclists.