I've followed lines on paper maps near Moab that eventually turned into rock crawling (regular road maps, not trail maps). On the road trip when I moved to Colorado, the paper map we had showed Rollins Pass as being drivable over the top...I'm glad we didn't try to go that way.

Four or five years ago, Apple Maps routed me to Smugglers' Notch ski area through the notch, which is closed in the winter. This past winter, it routed me through the notch on a dirt road which is not maintained year round, then I followed another road that looked like it went through until I got to a locked gate at a farm.

Interesting how maps are just data, and the level of trust we put into them is up to us. I don't trust Apple Maps any more. Waze is usually pretty good, possibly due to the real-time data from other users.

Personally I love the adventure of following lines on maps where I haven't been before, as long as there aren't any time/other pressures.