That's quite a trip they made!
We elected to drive up to the top of Montezuma Pass. It's a narrow, unpaved, windy road to the top.
Only part of the way up but you can see the road we've already traveled on down below.
We went real slow on those one lane turns!
Still not quite at the top. If you enlarge this photo by double clicking it, you can see a dark, straight line that goes from the hill on the right then off toward the middle of the photo. That's the US/Mexican border. Yep this park is right on the border.