The diameter of this enormous pit was fully a thousand feet.
The walls were smooth and appeared to be composed of a black, basaltic rock.
For a moment the vessel hovered motionless directly above the centre of the gaping void, then slowly she began to settle into the black chasm. Lower and lower she sank until as darkness enveloped us her lights were thrown on and in the dim halo of her own radiance the monster battleship dropped on and on down into what seemed to me must be the very bowels of Barsoom.
For quite half an hour we descended and then the shaft terminated abruptly in the dome of a mighty subterranean world. Below us rose and fell the billows of a buried sea. A phosphorescent radiance illuminated the scene. Thousands of ships dotted the bosom of the ocean. Little islands rose here and there to support the strange and colourless vegetation of this strange world.
