Which stairway? Was it spiral-like but cut off at the end, with pitch black under it? Immediately past a fog wall?
Starting NG+ tomorrow. Gonna go directly from Undead Burg to Darkroot through the Havel Rock way and then skip the Depths and most of Blighttown through New Londo/Valley of the Drakes. Kind of want to to see how fast I can beat the game. Pretty sure I'll top my NG record of 47 hours.
Not looking forward to the Duke's Archives, Crystal Caves, Firesage, or Bed of Chaos again. Aw crap Sen's Fortress, too.