Red Mountain Pass

The roads were poor on the way into Ouray. I drove up into the cloud base just after passing through Purgatory, and had to crawl the rest of the way through Silverton and the Red Mountain Pass as night descended. I later found out that the Pass had been opened only three hours before I drove through, on account of the recent heavy snowfall. But by Monday afternoon the roads were clear again.

You can accomplish a lot with explosive shells and big snowplows.