Above tree line is one of my favorite places to be. I love the panoramic views and the tiny plants and the beautiful desolation of the tundra. Tree line here in Colorado is around 11,600-11,800 feet; above that elevation, you can generally expect to find either an endless jumble of rocks or a vast expanse of tundra. As there are well over 1200 mountains that exceed this elevation, there is quite a bit of tundra!