My girlfriend bought this for me for Yule. It's basically an in-depth look at the upper-class pagan rituals in Ancient Europe and their connection with the seasons and runes. Although Mr. Vikernes does not hold an orthodox education, his analysis is still valuable in my mind. I liked the book though it was rather short (more of a pamphlet) and didn't contain all the specific cultural value portrayals and such I was hoping for, but it's esoteric content will keep me studying it for quite a while.
From his website: