What if there really was a "witch-cult" religion in Europe similar to that hypothesized by multiple scholars in the 19th and 20th centuries? It could have any number of different origins, but for the purposes of having a starting point, I'm going to go back a very long time and say it has its roots in the Paleolithic. That's not to say I'm unwilling to discuss other possible origins; to the contrary, I welcome them.
P.S. This isn't "secret history", is it? If it is, I may have to ask for help.
P.S. This isn't "secret history", is it? If it is, I may have to ask for help.