Wyldlands are places where reality has grown thin, or broken altogether. Areas inside Wyldlands do not need to follow the normal rules. Gravity might not be an issue, or the land occasionally gets up and walks around. The Wyldlands do not necessarily need to be added to your map, as they are smaller pockets of broken reality, but if you want to make a larger, fixed wyldland as a part of your area than be my guest.