Maybe your confused but the 5 block high wall around the whole of my area means stay the hell out.
Walls don't stop people, I've built a castle wall around my place (that is still unfinished) and even though some of the finished areas are over 30 blocks high people still feel the need to climb over it and wonder around the area that was intentionally walled off.
I even noticed today when I logged on after being away due to illness that someone planted a huge forest outside of one of the sides of my walls, now normaly I wouldn't care, but whoever planted it put a load of trees right next to my wall which has caused leaves to spawn on the inside of the wall, and its too dense for me to just ignite it or the whole forest will burn down (not that I am opposed to that as it was just plain grass originaly, there was never any trees there to begin with).

