Quick Answer
Using Landmarks for Natural Navigation is a lifesaving skill when visibility is zero in extreme cold conditions. It works, but only when you have a solid understanding of natural navigation principles and the ability to observe and remember your surroundings.
When Visibility is Zero
In a whiteout, your primary reliance should be on sound and feeling. However, when sound is muffled by heavy snow, or feeling is limited by extreme cold, using landmarks becomes crucial. You can identify and remember key features by associating them with your mental map of the terrain. This involves paying attention to the lay of the land, topography, and other distinguishing natural features.
Identifying and Remembering Landmarks
In extreme cold, visibility is often reduced to 0-50 meters. To identify useful landmarks, focus on features that are more than 100 meters away and that have a distinct shape or size. These could be large rocks, prominent ridges, or unique patterns of snow or vegetation. Remembering your landmarks is key; try to associate them with your mental map, and use visualizing techniques like creating a ‘mental snapshot’ of your surroundings. Aim to recall at least 5-7 key landmarks during your navigation.
Using Landmarks for Navigation
When using landmarks for navigation, it’s essential to maintain a steady pace and keep looking around. Look for familiar features and compare them to your mental map. Adjust your course accordingly and make regular checks on your landmarks. To stay on track in extreme cold, use a simple ‘bearing and distance’ navigation technique. Focus on maintaining a steady bearing and cover a consistent distance between landmarks. This will help you stay on course even when visibility is zero.
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