I plant my axe into the snow and feel it sink in deep. Too deep. I hesitate a moment and assess my surroundings. From the looks of it I’m traversing straight into a complex crevasse system where the upper glacier tips and fractures over the edge. I hack through the snow and try to look inside to estimate whether or not I could walk over it. It’s a no-go, the snow bridge is thin and what I thought to be three successive cracks turns out to be the gaping mouth of a single massive crevasse.