In Game Description
A terribly worn dragon talon.
Legend has it that in the deepest reaches
of the Black Gulch, behind a door locked
from the inside, is a magnificent city
built for a great slumbering dragon.
This talon clearly dates to ancient times,
but great vitality emanates from it still.
Dark Souls II
Granted immediately upon loading the game if the player owns the Crown of the Sunken King DLC.