Now a pillar of something that looked like steam but was probably vapor from molten and evaporated rocks was rising upwards, like the mushroom clouds of his own days.
There was some activity, but no vapor/steam.
mnli hypothesis: There was some activity, but no vapor/steam. premise: Now a pillar of something that looked like steam but was probably vapor from molten and evaporated rocks was rising upwards, like the mushroom clouds of his own days.