Created by the Mapping and Geographic Information Centre at BAS, the map offers a detailed topographic view of ... including contours, mountain spot heights, rock outcrops, lakes, and place ...

Multiple surveys from different dates can be compared to visualize and quantify change either in map view ... Standard topographic outputs from the Virtual Surveyor software are Surfaces or TINs ...

And where the slope is shallow, the lines are far apart. If I add contours to the map, I can see where the hills are and how steep they are. Symbols are often similar on different types of map.