The aperture was black with a darkness almost material. That tenebrousness was indeed a positive quality; for it obscured such parts of the inner walls as ought to have been revealed, and actually burst forth like smoke from its eon-long imprisonment, visibly darkening the sun as it slunk away into the shrunken and gibbous sky on flapping membranous wings. The odor arising from the newly opened depths was intolerable, and at length the quickeared Hawkins thought he heard a nasty, slopping sound down there. Everyone listened, and everyone was listening still when It lumbered slobberingly into sight and gropingly squeezed Its gelatinous green immensity through the black doorway into the tainted outside air of that poison city of madness.