A Path of Rib Bone Arches                              -      -      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      -      -

Primitive drawings seem to have been etched onto the ribs at eye level. 
Hard to make out one can see half-human, half-fish beings swimming in and
out of bubble shaped dwellings.  Inch tall dried seahorses are nailed to the
drawings resembling mounts for the inhabitants of this strange underwater
city.  Sand has gradually scoured away at the drawings, leaving them faint. 
Heat retained from the the sun radiates from the arches in comforting waves
as if this magnificent creature was still alive.