Wyoming, United States
Teewinot Mountain is the sixth highest peak in the Teton Range, Grand Teton National Park, Wyoming. The name of the mountain is derived from the Shoshone Native American word meaning "many pinnacles". The peak is immediately northeast of Grand Teton and the two are separated from one another by the Teton Glacier. Teewinot Mountain rises more than 5,500 feet (1,675 m) above of Jenny Lake. The 40 mile (64 km) long Teton Range is the youngest mountain chain in the Rocky Mountains, and began their uplift 9 million years ago, during the Miocene. Several periods of glaciation have carved Teewinot Mountain and the other peaks of the range into their current shapes. Along with a number of other high peaks in the central Teton Range, Teewinot is part of what is known as the Cathedral Group, due to the similarity of the peaks to the spires of a cathedral.
Teewinot Mountain is most easily ascended via the eastern face, which finishes with a somewhat exposed Class 4 scramble to the tiny summit. An unmarked climbers' trail, known as the Apex Trail, leads most of the way up the mountain from the Lupine Meadows area. An ice axe, and the skill to use it, is recommended except in the late climbing season.