Located in northwestern Wyoming. The Teton Range is a 40-mile-long mountain front rising from the valley floor some 6,000 feet. The towering Tetons were formed from earthquakes that occurred over the past 13 million years along a fault line. The jagged range includes its signature peak – Grand Teton, 13,770 feet – and at least twelve pinnacles over 12,000 feet. Seven morainal lakes adorn the base of the range, and more than 100 alpine lakes dot the backcountry.