I once drove 50 miles on the North Cascades highway and saw no-one. Mostly due to fires in the area though, so the air quality wasn’t great We stopped at one

I once drove 50 miles on the North Cascades highway and saw no-one. Mostly due to fires in the area though, so the air quality wasn’t great We stopped at one point and heard a motorbike come up the valley for 10 minutes before it passed us! And that’s a fairly main road - I can only imagine how isolated it is once you’re deep in the park