Ground spawn in the north wing, inside the west room that is along the square path.
/loc is +330, +205
or paste in your map file:
P -206.4996, -331.2980, 1.5138, 127, 0, 0, 3, Ring-Scored_Talon
this item is one of the 3 pieces needed for the Hand of Glory, the master key for Howling Stones.