Used to play around in a woods that had cemeteries on both side of it ,Me & my buddies had found everything from candles in a circle to a burned pentagrams in the ground & on trees plus the occasional dead lamb( nearby was a sheep farm ).Never seen anyone around & I spent a large amount of time in those woods camping ,hunting & fishing .Before its brought up never seen any undead as well ,definitly would be in the first strange thing paragraph.