A strong pagan belief is that the natural world is embedded in all of us. One method of defining the landscape is by building monuments. The construction of tombs at the boundaries of territory illustrates to outsiders that the area is rightfully yours, since it belonged to your ancestors. A succession of ritual monuments known throughout prehistoric Europe, from wooden trackways to henges (stone or wooden circles), suggest the strong influence of altering the landscape as a way of defining territory within the pagan belief system.