The Da Vinci Notebooks at sacred-texts.com
(Of Snakes, carried by Storks.)
Serpents of great length will be seen at a great height in the air, fighting with birds.
(Of great guns, which come out of a pit and a mould.)
Creatures will come from underground which with their terrific noise will stun all who are near; and with their breath will kill men and destroy cities and castles.