A helicopter passes below Ama Dablam, the iconic pyramid peak with its hanging glacier. The helicopter, machine serving climbers through rescues, supply runs, evacuations, becomes a symbol of passage into thin air. At this altitude, helicopters operate at their absolute limits; rotors struggle in atmosphere that barely supports flight. The juxtaposition of human technology against nature's massive pyramid captures the audacity of mountain aviation. This is the lifeline into the unknown, the mechanical passage into zones where humans cannot survive unaided.