If that! When I visited northern MN, the boundary waters area, I could have very easily strayed into Canada on the back roads I was traveling. They weren't ev

If that! When I visited northern MN, the boundary waters area, I could have very easily strayed into Canada on the back roads I was traveling. They weren't even paved, there were no ditches, it's mostly water/marsh/swamp up there. There's just some small road signs here and there notifying of the need to cross into Canada via the checkpoints on the main roads, but they're often posted where you enter the unmaintained gravel road - not right at the border. These back roads were established long before we cared about crossing the Canadian border. If you happen to be camping or canoeing in the area for an extended period, it's very likely you'll get turned around and accidentally go north instead of south on one of these back roads and find yourself in Canada when you get back to driving. Furthermore since they're not really well maintained, it's possible you'll be taking turns to avoid washouts or other obstructions like fallen trees. You might stray into Canada just to reach your destination because the preferred route is out of service.