Icy Trail                                              -      -      - 
(-------------------------------------------------)     W <---(M)---> -
                                                        SW     -      -

The entirety of the cave is saturated with an icy blue haze, diffused by
the uncountable microscopic frost crystals between the chilly polar sun and
your eye.  Where there would be a fork in the trail, a large, untamed Buxus
bush obstructs the way southeastward.  Covered in icicles, frost and
freshly-fallen snow, it looks like it would be difficult to jump through or
over, and the long way around it seems much less perilous.