Quick Answer
If you encounter a snow bridge over a crevasse, proceed with extreme caution and assess its stability before crossing. Check for cracks, unevenness, and any signs of recent instability. If in doubt, consider an alternative route or return to a safer location.
Approaching the Snow Bridge
When approaching a snow bridge, move slowly and carefully, observing the surface for any signs of weakness. Look for cracks, unevenness, or a soft, slushy texture, which can indicate instability. Use your crampons or ice axe to test the bridge’s stability by applying gentle pressure. Avoid sudden movements or weight shifts, which can cause the bridge to collapse.
Crossing the Snow Bridge
If you decide to cross the snow bridge, lead with your strongest foot and take small, cautious steps. Keep your weight centered over your feet and avoid leaning forward or backward. Use your ice axe to maintain balance and protect yourself from a potential fall. If you encounter any unexpected movement or instability, freeze in place and reassess the situation before making a decision.
Escaping a Collapsing Snow Bridge
If the snow bridge begins to collapse beneath you, remain calm and act quickly. Use your ice axe to dig into the surrounding snow and create a makeshift anchor. Slowly and carefully lower yourself to the ground, taking care not to get stuck in the collapsing snow. Once you’ve escaped the bridge, quickly move away from the crevasse and find a safe location to regroup and reassess your route.
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