Navigating Snow-Covered Terrain Without Landmarks: Is It Possible?

Using a Compass in a Whiteout

When a whiteout occurs, visibility is severely reduced, and landmarks are invisible. To navigate, use a compass to take bearings and maintain direction. Hold the compass level and away from metal objects, and take 3-5 readings to confirm the direction of travel. Use the compass to navigate in a series of short, connected legs, rather than trying to maintain a straight course.

Following Contour Lines and Ridges

Contour lines on a map indicate the shape and elevation of the terrain. In a snow-covered area, follow a ridge or a valley to maintain direction and traverse the terrain. A ridge provides a clear direction of travel, while a valley offers a relatively safe passage through the terrain. To follow a contour line, use the compass to take a bearing, and then move in a series of short, connected legs, keeping the bearing in mind.

Using GPS and Map Reading Skills

GPS devices can be used to navigate in a snow-covered area, but battery life and signal strength can be affected by the environment. To use a GPS device effectively, set the device to show the bearing to the destination, and then use the compass to navigate in the correct direction. In addition, use map-reading skills to understand the terrain and locate natural features like ridges and valleys. This will help to confirm the direction of travel and avoid getting lost.