The pilot, flying the second airplane in a flight of two, was maneuvering to turn from base to final for a full-stop landing at a remote back-country airstrip. During the accident pilots turn to final, the airplanes nosegear and right main gear contacting a cliff on the outside of his turn, separating them. After the other pilot confirmed the damage, the accident-airplane pilot flying flew to a town where emergency personnel could be available on the ground. The pilot decided to land in the grass/turf area alongside the main runway. Although the touchdown was successful, during the landing roll, the nosegear strut dug into the soft terrain and the airplane nosed over onto its back.