Have been researching the folklore and stuff. When one gets back to the Wild Hunt and all, and anything prior to the Roman invasion, it is not too far until the archaeology reveals that the 'superstitions' of the time required human sacrifice.

Recent excavations of so-called 'hill forts' (truly defended settlements) show that people were killed so as to be buried in symbolically important locations. So much for the back to nature brigade; folklore is fascinating stuff, but when we look for a rationale behind its early manifestations, it is not at all pleasant. It's homicidal.