Quick Answer
When traversing glaciers, look out for blue or black ice, as it may be a sign of a hidden crevasse, and stay alert for changes in terrain, such as sudden drops in elevation. Pay attention to the sound of creaking or cracking ice, and be cautious when crossing or approaching areas with open crevasses.
Visual Cues and Warning Signs
When scanning the terrain for potential crevasses, look for visual cues such as seracs, which are tall, thin spires of ice that can indicate a hidden crevasse. Black or dark-colored ice is also a sign of a potential crevasse, as it often indicates the presence of air pockets beneath the surface. Be aware of areas with recent snowfall or melt, as these conditions can create weak spots in the ice.
Sound Cues and Ice Conditions
Listen for unusual sounds such as creaking, groaning, or cracking ice, which can indicate the presence of a hidden crevasse. Pay attention to the texture of the ice, looking for signs of recent crevasses or cracks. A soft, powdery snow or a rough, uneven surface may be a sign of a hidden crevasse.
Safe Traverse Techniques
When traversing a glacier, stay focused on the terrain directly in front of you and maintain a steady pace. If you must cross an open crevasse, use a rope and make sure to secure your anchors before proceeding. Always traverse at an angle, rather than directly across the crevasse, and avoid sudden changes in direction or speed.
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