[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.

Other sections on the mountain are rated as high as class 5.11, with the Middle Teton Glacier route considered to be the most technically advanced.

The first ascent of the Glacier Route was completed on August 4, 1944, by Paul Bradt and Sterling Hendricks.