Walking the Splintered Spine                           -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        SW     -      -

With increasing difficulty the trail climbs along the spine of this
leviathan.  Jagged bone juts at odd angles and invites a person to impale
their foot.  Whole sections of the trail have fallen apart and one must
nimbly jump across these gaps or else perish in terrible fall.  Vertigo can
strike those of weak stomach were they to linger very long on the drop to
either side of the spine of the fish.  Ahead, the spine has crumbled
creating a gap too great to cross.  Will all this work lead to a dead end?