Ground spawn in the south wing, inside one of the western rooms from the big disco area.
/loc is -565, +150
or paste in your map file:
P -151.2561, 567.2673, 1.5161, 127, 0, 0, 3, Petrified_Talonless_Claw
this item is one of the 3 pieces needed for the Hand of Glory, the master key for Howling Stones.