If the eruption of a single volcano can darken the atmosphere over the entire globe, a simultaneous and prolonged eruption of thousands of volcanoes would blacken the sky. Volcanoes vomit water vapor as well as cinders. After this catastrophe darkness covered the earth.
None can live when the sun is veiled by clouds.
The phenomenon of gloom enduring for years impressed itself on the memory of the Twelve Tribes and is mentioned in many passages in the Bible. Excerpts from ZetaTalk on New Geography After a Pole Shift the former poles invariably melt and soften while the new poles take on layer after layer of ice and snow. This pace is not matched, as polar cap building only stabilizes at a point where evaporation and melting at glacial edges equals the arrival of newly fallen snow after some centuries. In the meantime the waters rise worldwide, several hundred feet, and then recede again. This pace is gradual, so that coastal settlements have plenty of time to relocate, an exercise they find they must do repeatedly.