The Dark Forest                                        -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S     SE

This is a very dark, dense, thick part of the forest.  The trees grow
close together, while brambles, bushes, and other forest plants curl around
the trunks.  Moving here is an effort, even more so than usual do to the
lack of any sort of light.  The trees tower so high and their canopies
spread so wide that their effect is to block out all light from above and
dim the light from your torch.  You note eyes hiding in the darkness,
glittering in the torchlight, watching you, waiting...  Somewhere nearby,
you hear the sound of a raging, roaring river!