Maybe not in your world, but I've got one. Pretty normal terrain then suddenly there's this POI (one of the fence-made-of-flattened-cars trailer POIs) that is sitting on a 20 block high plinth. There is a gravel path winding up the hill that makes a sharp upturn to meet the POIs 'ground level'. Probably it would be okay if the game had a way to smoothly transition from the edge of the POI on the hillside down to the terrain on the downward slope. Instead of a cliff face. If I can find it again I'll post a pic.
One of my complaints about NitroGen was that it had too many roads that go nowhere. Vanilla RWG doesn't really suffer from that problem, at least. The major roads always lead to towns and the minor roads at least have a cabin or something at the end.