Intersection of Basalt and Ash                         -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

Ash kicks up into your face as you make your way down the avenue. 
Looking at the ground which is composed entirely of rock hard basalt, you
see where the street got its name.  Your lantern's light provides a mystical
image reflected off the ashy ground.  You're amazed by the skill required to
pave a street with such brittle material and are eager to learn more of
these exotic people.  Ash Avenue leads north and south from here.