Among the Clouds                                       -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      -      -

Thin wisps of cloud either side of you are visible through the circular
windows, and at this height you find it increasingly difficult to breathe. 
However, you must gather your remaining energy should you choose to climb
further upwards, or you could take the long journey to the base of the ivory
spire.  North from here is a bridge through the clouds.