Before you trust GPS or any other tech, you should be able to read a topographic map. This skill is the foundation of all navigation — and it works without batteries.
What is a topographic map?
A topographic map represents three-dimensional terrain on a two-dimensional surface. Unlike road maps, it shows not just paths but the shape of the land itself, through contour lines.
Reading contour lines
Each contour line connects points of equal elevation. The spacing between lines — the contour interval — tells you how steep the terrain is:
- Tightly spaced lines: steep terrain
- Widely spaced lines: gentle terrain
- V-shape pointing downhill: a ridge
- V-shape pointing uphill: a valley or gully
Understanding scale
The scale of a map tells you how much reality has been compressed:
- 1:25,000 — 1 cm on the map = 250 m on the ground (ideal for hiking)
- 1:50,000 — 1 cm = 500 m (good for day tours)
- 1:100,000 — 1 cm = 1 km (overview maps)
Next in the path
In the next article you’ll learn how to combine the map with the compass and orient yourself in the terrain.
graph LR
A[Start] --> B[Orient the map]
B --> C[Determine location]
C --> D[Set bearing]