When you can’t see, you navigate by instrument, not by eye. How to travel safely in fog, whiteout, and darkness using compass bearings, pace counting, and terrain handrails.

Lost your compass or drained your phone? Find north with a stick and the sun, an analog watch, or the stars — and turn a rough direction into a straight line toward safety.

GPS dies; a map and compass never do. Set declination, orient the map, follow a bearing, and triangulate your position when you are unsure.