Middle Teton (12,804 feet (3,903 m)) is the third highest peak in the Teton Range, Grand Teton National Park, Wyoming. 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. Several periods of glaciation have carved Middle Teton and the other peaks of the range into their current shapes. 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).