Middle Teton

Middle Teton (12,804 feet (3,903 m) is the third highest peak in the Teton Range, Grand Teton National Park, Wyoming.[3] The peak is immediately southwest of Grand Teton and the two are separated from one another by the lower saddle, a broad high ridge at 11,600 feet (3,540 m). The Middle Teton Glacier is located on the eastern slopes of the peak. Middle Teton is a classic pyramidal shaped alpine peak and is sometimes included as part of the Cathedral Group of high Teton peaks. 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.[4] Several periods of glaciation have carved Middle Teton and the other peaks of the range into their current shapes.[5] From the lower saddle, a distinctive feature known as the black dike appears as a straight line running from near the top of the mountain down 800 feet (240 m).[6] The black dike is a basaltic intrusion that occurred long after the surrounding rock was formed.