The Tetons are one of the newest mountain ranges in North America and at the same time contain some of the oldest geological rocks, dating back some 2.7 million years. How is this possible? Two things, first is the fact that the Teton Fault is still pushing the peaks skyward today. In addition, over 2 million years ago, glaciers flowed down from northern Yellowstone depositing varying materials from up north and simultaneously carving out and sculpting the Teton Skyline. Two different events from two different locations give the Tetons two very different geological finds. Another amazing thing about this mountain range is that because there are no foothills, you get to witness complete unobstructed views of the mountains. All this geologic force has created a fairly flat valley floor with peaks topping out close to 14,000 feet above sea level. Grand Teton National Park also has a plethora of lakes and rivers, coupled with extraordinary wildlife—you have the makings for extremely dramatic photography.