These two-dimensional maps provide height data with visual cues. Google Maps shows a terrain map as contour lines that ...

These are lines drawn on maps that join places of the same height. They are usually an orange or brown colour. Some contour lines have their height above or below sea level written on them.

Map symbols show what can be found in an area. Each feature of the landscape has a different symbol. Contour lines are lines that join up areas of equal height on a map. By looking at how far ...