Where to Find Books of Knowledge in Clogher: Assassin’s Creed Valhalla Post published:May 17, 2021 Post category:Assassin’s Creed Valhalla How to get the Book of Knowledge in Clogher in AC Valhalla Enter the Clogher Regin from the Western side.You will find a well-hidden breakable wall behind the house on the left.Use a nearby red jar to blow up the door.Go inside of the cave and pull a big moveable stone with handles on it, to make enough room for Eivor to slip through.Slide inside the hole to find The Book of Knowledge. Leave a ReplyCancel reply