Teewinot Mountain is the sixth highest peak in the Teton Range

Teton Range

The Teton Range is a mountain range of the Rocky Mountains in North America. A north-south range, it is on the Wyoming side of the state's border with Idaho, just south of Yellowstone National Park. Most of the range is in Grand Teton National Park....

, Grand Teton National Park

Grand Teton National Park

Grand Teton National Park is a United States National Park located in northwestern Wyoming, U.S. The Park consists of approximately and includes the major peaks of the long Teton Range as well as most of the northern sections of the valley known as Jackson Hole. Only south of Yellowstone...

, Wyoming

Wyoming

Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

. The name of the mountain is derived from the Shoshone

Shoshone

The Shoshone or Shoshoni are a Native American tribe in the United States with three large divisions: the Northern, the Western and the Eastern....

 Native American

Native Americans in the United States

Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

 word meaning "many pinnacles". The peak is northeast of the Grand Teton

Grand Teton

Grand Teton is the highest mountain in Wyoming's Grand Teton National Park, and a classic destination in American mountaineering.- Geography :...

 and the two are separated from one another by the Teton Glacier

Teton Glacier

Teton Glacier is located below the north face of Grand Teton in Grand Teton National Park, Wyoming and is surrounded by Mount Owen to the west and by Teewinot Mountain to the north, which comprise the peaks of the Cathedral Group. Teton Glacier is the largest of the twelve named glaciers in the...

 and Mount Owen

Mount Owen (Wyoming)

Mount Owen is the second highest peak in the Teton Range, Grand Teton National Park in the U.S. state of Wyoming. The peak is named after William O. Owen, who organized the first documented ascent of the Grand Teton in 1898. Mount Owen is part of the Cathedral Group of high Teton peaks, a...

. Teewinot Mountain rises more than 5500 feet (1,676.4 m) above Jenny Lake

Jenny Lake

Jenny Lake is located in Grand Teton National Park in the U.S. state of Wyoming. The lake was formed approximately 12,000 years ago by glaciers pushing rock debris which carved Cascade Canyon during the last glacial maximum, forming a terminal moraine which now impounds the lake. The lake is...

. The 40 miles (64.4 km) long Teton Range is the youngest mountain chain in the Rocky Mountains

Rocky Mountains

The Rocky Mountains are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States...

, and began their uplift 9 million years ago, during the Miocene

Miocene

The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...

. 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

Cathedral Group

The Cathedral Group is a term applied to a collection of most of the tallest mountains of the Teton Range, all of which are located in Grand Teton National Park, in the U.S. state of Wyoming. The collection of mountains known as the Cathedral Group are classic alpine peaks, with pyramidal shapes...

, due to the similarity of the peaks to the spires of a cathedral.

Climbing

Teewinot Mountain is most easily ascended via the eastern face, which finishes with a somewhat exposed Class 4

Yosemite Decimal System

The Yosemite Decimal System is a three-part system used for rating the difficulty of walks, hikes, and climbs. It is primarily used by mountaineers in the United States and Canada. The Class 5 portion of the Class scale is primarily a rock climbing classification system. Originally the system was...

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.