Your “essentially” is not in the Bible.
Wood older than the pyramids staying intact... I’m going with a hard ‘no’ on that.
Definitely not in those categories, since folk tales of a massive flood are endemic to ancient Mesopotamia, including in the Epic of Gilgamesh . Here’s one potential explanation:
https://ncse.ngo/yes-noahs-flood-may-have-happened-not-over-whole-earth