Keeping books of nature: An introduction to Leonardo da Vinci’s Codices Arundel and Leicester

And let some mountains collapse headlong into the depths of a valley and dam up the swollen waters of its river But soon breached, the river bursts the dam and gushes out in high waves. Let the biggest of these strike and demolish the cities and country residences of that valley. And let the disintegration of the high buildings of the said cities raise much dust which will rise up like smoke or wreathed clouds through the descending rain ....