fact chinese china northwest everest standard 1951 nanga climbing dhaulagiri thousanders 1953 1987 park metre goddess 2000 rate region nepal summit 1954 1955 shishapangma 1986 october gasherbrum 2007 route mountain dramatic rises located kukuczka himalayan korean prominence location kangchenjunga easiest reached home great pakistan peaks 1989 himal kilometres karakoram south west climbers lhotse climb messner 1956 1990 main manaslu east face himalaya makalu metres level climber mosimage making time 1993