Our mountain trees are mostly evergreens so we don't get the dramatic color changes seen in Eastern forests. The aspens here do change to a very bright yellow that highlights the green of the rest of the forest and thousands of people drive up from the city in September to see them.
Here we are hiking through an aspen grove on our way between the domes. It's interesting how neighboring groves can simultaneously be green, have turned yellow, or have already dropped their leaves. From what I understand, the roots of all the aspens in one grove are all connected so in essence each grove is one big plant.
The top of the second dome had this big notch in it that served as a big wind tunnel. As you can see it had a big pothole full of water that the dogs splashed into to get a drink. Somehow we kept the kids from falling in.