After every few steps, we huddle over our ice axes mouths agape, struggling for sufficient breath to

After every few steps, we huddle over our ice axes …

After every few steps, we huddle over our ice axes mouths agape, struggling for sufficient breath to keep our muscles going.... at a height of 8800 metres, we can no longer keep on our feet while we rest. We crumple to our knees, clutching our axes.... Every ten or fifteen steps we collapse into the snow to rest, then crawl on again.

Reinhold Messner