There are many cultural/mythological things in many post-flood cultures which you can tell are corruptions of the truth explained in the first 11 chapters of Genesis.  That is one of the things that makes it obvious that those chapters are true and literal.

For more information on taking Genesis literal (scientifically, historically, and textually), check out my 6 part series.  https://trustjesus.substack.com/p/literal-genesis  If you don't have time for all 6, read 4-6 which are better organized.