It was engraved all over

and showed how war first came into the world

and the flood destroyed the tribe of giants.

They suffered a terrible severance from the Lord;

the Almighty made the waters rise,

drowned them in the deluge for retribution.

beowulf, 1688-1693

it's pretty amazing that grendel's mother is slain by the sword of a giant-killer, but also that they had this idea of giants being the cause of the flood. just interesting.