Diodorus Siculus,
The Historical Library of Diodorus the Sicilian…
(1814)
“ In many places of Gaul, there is something strange and very remarkable, which is not fit to be passed over in silence. For the west and north winds in summer are so fierce and violent, that they fling into the air great stones as big as a man can grasp in his hands, together with a cloud of gravel and dust. ”
