You stand amidst the immaculate stonework of Anor Londo, looking thoughtfully around the circular chamber you find yourself in. Countless intricately carved statues of knights peer out at you from alcoves placed at regular intervals around the room, though your attention is drawn not to them, but to the massive statute of Gwyn himself that dominates the far end of the room, a golden sword clutched tightly in his stonework fingers, resting tip-down against the dias beneath him.
The room seems like a dead end, but you can't shake the creeping feeling that there must be something here, something hidden. The path to it had been hidden away carefully, accessed only from the bottom of a lift when it was at its lowest point. Why would those who built this place go to the effort to hide the room away in such a fashion, with nothing of value within it, you wonder.
As you run your gaze idly across the statues ringing the room, it suddenly occurs to you that this looks familiar. You've seen this design before, this same layout, engraved on a ring you discovered deep within the catacombs. Your heart soaring at the discovery, you pull the ring from your pocket with excitedly trembling fingers, and slip it on.
Immediately, the statue of Gwyn fades away, nothing but an illusion, revealing a staircase behind it. Trepidatiously, you descend the stairs.
At the bottom, you discover an arch, wreathed in a blanket of fog as many such doors are, and on the ground before it, a long carpet. At the end of the carpet, right before the archway, four candles stand arranged in a square.
"Halt" a soft, formal, yet distinctly male voice declares as you take your first step onto the rug. "This is the tomb of the Great Lord Gwyn. Tarnished, it shall not be, by the feet of men."
The voice echoes from behind the fog, though no speaker can be seen.
"If thou art a true disciple of the Dark Sun, cast aside thine ire,
hear the voice of mineself, Gwyndolin, and kneel before me."