Key to the main entrance to the Grand Archives of Lothric.
With the fire fading, and the spreading pus of man tainting the castle, the Grand Archives closed its doors for good.
Today, only a few of its keys remain. This one likely belonged to Gotthard, one of king's Black Hand, who fled the castle.
Unlocks the main entrance for the Grand Archives.
Found on a corpse just outside the entrance for the Grand Archives.