In concept, the 1970 endeavor to enable Japanese daredevil skier Yuchiro Miura to become the first athlete in his sport to descend Mount Everest seemed like an expensive folly: a $3 million budget that initially involved 850 men and 27 tons of equipment. And documentary footage covering this adventure seemed destined to become a standard-issue travelogue, at least in its initial journeys through too-picturesque stretches Nepal.