Blood Eagle?

[OakTribes]

"The blood eagle was a method of execution, that is sometimes mentioned in Nordic saga legends. It was performed by cutting the skin of the victim by the spine, breaking the ribs so they resembled blood-stained wings, and pulling the lungs out through the wounds in the victim's back. Salt was sprinkled in the wounds."
http://en.wikipedia.org/wiki/Blood_eagle

God damn