Terrible is the memory of that dark descent in which hours wore themselves away whilst Carter wound sightlessly round and round down a fathomless spiral of steep and slippery stairs. So worn and narrow were the steps, and so greasy with the ooze of inner earth, that the climber never quite knew when to expect a breathless fall and hurtling down to the ultimate pits; and he was likewise uncertain just when or how the guardian night-gaunts would suddenly pounce upon him, if indeed there were any stationed in this primeval passage. All about him was a stifling odour of nether gulfs, and he felt that the air of these choking depths was not made for mankind. In time he became very numb and somnolent, moving more from automatic impulse than from reasoned will; nor did he realize any change when he stopped moving altogether as something quietly seized him from behind. He was flying very rapidly through the air before a malevolent tickling told him that the rubbery night-gaunts had performed their duty.