Ok... I didn't read the entire book. I couldn't. If you are a viking scholar with a good idea of Scandinavian geology,, you MIGHT be able to follow this book. I could not follow it at all. "Dorchenstuffer from Smidindunker in the providence of Climinhuesen was at war with Durkinshmesir Orgulhussien of the Rodgerstifinlugar"........ That's not an actual quote.. but it might as well be. I think you get the picture. This book is way over my head. After about 90 pages of this I had to quit... I absorbed NO information about Vikings at all.