i would like to know About that too. my Camp is completely walled in, without faults in between the Palisade. i tried putting workbenches everywhere, but all that did is cause me to wake up to broken benches and dwarfs sitting next to them. I tried putting useles buildings everywhere, because the loading screen said mobs dont spawn near playerbuildings. Nothing made a difference, except that the typical area in which they spawn IN my camp shifted around