Although the Cave Goblins had sucked all the colors out of Nature, their thirst seemed unquenchable Now they built huge plants in order to produce artificial colors Smoke poured out of the factory chimneys, and darkened the sky Sun was no longer able to penetrate the smoke, and it was always dusk Corrosive vapors lay over the land The air became stuffy, breathing more difficult At first the White Goblin had watched the activities of the Cave Goblins with astonishmеnt, but soon with increasing alarm When he advisеd moderation they laughed Then, in their sickness, drove him back to his glacial world