On the Edge of Tree Forest                             NW     N     NE 
(-------------------------------------------------)     W <---(M)---> E
                                                        SW     S      -

Ogres love the seclusion and the thickness and hazards of the forest
protect them from outsiders.  The forest is less than friendly and this is
just the edge but its full of bristles and brambles.  A few mushrooms sprout
up which gives the ogres another reasons to build so near to the forest,
they love mushrooms with the variety of meat they eat.