GURPS Navigation (Land) and Terrain

[Rupert]

Originally Posted by Rolando

So, geographical landmarks may add bonuses, speed is a handicap in itself, visibility modifiers (foliage and mist for example) may be a penalty if using the stars, having a compass will eliminate visibility penalties (but maybe not grant bonuses), following a trail may add bonuses and may require vision or tracking rolls if there is low visibility.

A compass alone will not compensate for lack of landmarks. It's really easy when following a compass to drift to the left or right while still facing the right direction (and thinking that you're moving in the right direction).