Climbing solo in Eastern Tibet in 1986, Reinhold Messner confronted... Something. Whatever it was stood up-right and moved with astonishing agility. Was it human or animal or an unclassified combination of the two? Had a legend come to life before his very eyes? Since that heart-stopping moment, Messner has been obsessed with what the Western media has called the "abominable snowman". Widely considered the greatest living mountain climber, Messner...