Can avalanche debris create secondary hazards for rescuers?

Hidden Dangers in Avalanche Debris

Avalanche debris can be a maze of buried crevices, holes, and cracks. These hidden voids are often created when the initial avalanche breaks through weak layers or buried rocks, tearing apart the surrounding snowpack. Rescuers may unknowingly step into these crevices, causing falls or further burials.

Assessing Avalanche Debris for Safety

When approaching an avalanche debris field, rescuers should first assess its stability and potential hazards. This can be done by carefully observing the debris for signs of recent movement, such as fresh cracks or shifting snow. Rescuers should also use probes and shovels to systematically search for and stabilize loose or unstable snowpack around the debris field.

Mitigating Secondary Hazards in Avalanche Rescue

To reduce the risk of secondary hazards, rescuers should work in teams, using a “buddy system” to provide mutual support and observation. When entering the debris field, rescuers should take small steps and test each footfall to avoid triggering further avalanches or falls. Additionally, they should use anchors and ropes to secure themselves and their equipment, as necessary, to prevent being swept away or falling into hidden crevices.