It is thought that along this route is the largest grove of aspens in the world. I recall hearing something like 30 miles in diameter. As I understand it aspens are all interconnected underground.
Here are three images of aspens, taken between 2:30 and 3:30 pm on September 29, 2009. The one with the single fur tree growing within the aspen grove has a different color cast in it due to the fact that we were under the canope of the dense foliage.