Some areas have a lingering connection to the primal forces of the world's birth. the Shadow Society and the Dark Circle both use these places for powerful magic. This is one of the two types of places where Changelings might be born (RPG concept)
Found in many cultures from many ages around the world, the Green Man is often related to natural vegetative deities. It is primarily interpreted as a symbol of rebirth, representing the cycle of growth each spring. Some speculate that the mythology of the Green Man developed independently in the traditions of separate ancient cultures and evolved into the wide variety of examples found throughout history..