Before a Deep Mine                                     -      -      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        SW     -      -

You are standing in front of a sizeable, yawning hole in the ground, the
doorway framed by supporting timber which runs along the inside of the
tunnel, difficult to make out in the poor light.  Despite how sturdy the
mine looks, you are unsettled, the prospect of descending deep into the
ground is unnerving.  The tunnel is very high to accommodate the pure size
and bulk of the miners who travel down it.  All an adventurer would need to
travel down there is a trustworthy light source and some courage.