The map doesn't show elevations. Medieval maps work that way, they only show notable hills and cliffs, but no slow descents. Here's similar from Norway http:/

The map doesn't show elevations. Medieval maps work that way, they only show notable hills and cliffs, but no slow descents. Here's similar from Norway http://thumbs.dreamstime.com/z/old-map-norway-11431502.jpg http://thumbs.dreamstime.com/z/old-map-norway-11431502.jpg