The Lair of the Abyssal Isopod                         -      N      - 
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                                                        -      S     SE

Explorers of the ocean long ago discovered the phenomenon known as deep-
sea gigantism, but this is a frighteningly good example.  This isopod has
hundreds of legs covering a body the size of a sheep.  It lives in this
chamber as it would a zoo, content and well-fed.  The priests keep it as a
sort of living monument.  It is both awe-inspiring and disgusting, and not
likely to keep spectators for long.  
A horrifying-looking crustacean skitters about, constructing something out of muddy sand.