Stairs, huh? — If we're thinkin' logically, yeah. There oughta be some stairs if we fell down here. Buuuuuut haven't seen any for... however long I've been down here. 'Less... there's some weird magic-y sparkles goin' on.

(it's the only possible answer to this. that some sort of arcane talent was involved in this somehow. but what kind of warlock would have fun with slipping people into this endless space? for what purpose? maybe just to be twisted? power usually comes with insanity.)