As the moon climbed higher in the sky, I began to see that the slopes of the valley were not quite so perpendicular as I had imagined. Ledges and outcroppings of rock afforded fairly easy foot-holds for a descent, whilst after a drop of a few hundred feet, the declivity became very gradual. Urged on by an impulse which I cannot definitely analyse, I scrambled with difficulty down the rocks and stood on the gentler slope beneath, gazing into the Stygian deeps where no light had yet penetrated.
All at once my attention was captured by a vast and singular object on the opposite slope, which rose steeply about an hundred yards ahead of me; an object that gleamed whitely in the newly bestowed rays of the ascending moon. That it was merely a gigantic piece of stone, I soon assured myself; but I was conscious of a distinct impression that its contour and position were not altogether the work of Nature. A closer scrutiny filled me with sensations I cannot express; for despite its enormous magnitude, and its position in an abyss which had yawned at the bottom of the sea since the world was young, I perceived beyond a doubt that the strange object was a well-shaped monolith whose massive bulk had known the workmanship and perhaps the worship of living and thinking creatures.