I was looking at a trail map and I saw that some ski lines are dashed rather than a solid line in the color of the difficulty level, and then beyond that, there are lines both solid and dashed with a yellow line running along it all the way down, could anyone let me know what these mean? I can't seem to attach the file but I've put the link if anyone needs to see it
https://www.stevenspass.com/-/media/stevens-pass/files/stevens-trailmap-2019-2020_frontside_web.ashx?la=en&hash=E05026B9B2E0E98E628BBEEEF909D2A5