Really gruesome at the end. Left a horrible vision that lingered rather badly for a few days. I wouldn't say it kept me awake, but while I was awake at night it kept repeating on me. Very well written which its why it kept repeating but I don't want to read too many like that! This is one of a number of fictional accounts based on expeditions to the Arctic (last one 'The Voyage of the Narwal')and I have another in my pile of books. After that I shall read about the voyage of the Fram and get back to real horrors.....