It is beautiful to look at, hard to reach, and terribly difficult to climb. Winds of 200 kilometres per hour or more scream across it day and night, while temperature falls to -20 C or lower. Every year, some who try to climb the highest mountain in the world do not return. But for a century people have been coming to climb Everest - some alone, some in groups, but all with a dream of going to the highests place in the world. This is their story.