A fiendish and ululant corpse-gurgle or death-rattle now split the very atmosphere—the charnel atmosphere poisonous with naphtha and bitumen blasts—in one concerted chorus from the ghoulish legion of hybrid blasphemies. My eyes, perversely shaken open, gazed for an instant upon a sight which no human creature could even imagine without panic fear and physical exhaustion. The things had filed ceremonially in one direction, the direction of the noisome wind, where the light of their torches showed their bended heads . . . . or the bended heads of such as had heads . . . They were worshiping before a great black foetor-belching aperture which reached up almost out of sight, and which I could see was flanked at right angles by two giant staircases whose ends were far away in shadow. One of these was indubitably the staircase I had fallen down.