See that narrow horizontal line midway up and running across the mountains in the left half of this photo? That is Going-to-the-Sun Road, which runs through the heart of Glacier National Park, Montana.
I wish I had thought to get a more contextual photo of the conditions of this road, but let me try to paint you a mental picture: Imagine a rocky cliff rising above you on one side, a two-lane road (one lane each way) barely wide enough for two vehicles, twisting over the sides the mountain, and on the other side of you a rock wall such as pictured here, and, well, not much to see on the other side but a massive valley.
My wife drove Going-to-the-Sun Road both ways. It was a whiteknuckle drive even for me as a passenger, I can’t even imagine being the one driving it. By the end of it, though, she was very proud to have done it.
The views, when not having anxiety issues, were breathtaking.
If you look closely at the creek at the bottom, you may be able to see the other part of Going-to-the-Sun road, to give you an idea of some of the elevation changes involved as well.
The peak at the centre is Mt. Oberlin; Logan Pass is barely visible at the end of the upper road. Haystack Creek runs below.