The original post: /r/askscience by /u/Prosaic- on 2025-01-19 00:20:14.

After a bit of a rabbit hole into Chinese History I was looking into prior routes that the Yellow River took and learned it once flowed to a delta nearly 1000 miles south of its modern route. I then found a mysterious gif: https://en.m.wikipedia.org/wiki/1851–1855_Yellow_River_floods#/media/File%3AYellow_River_course_changes.gif that shows a fairly drastic sea level change over the past few millennia. I can’t seem to find any sources or answers to this quandary and was wondering if any experts have any explanation for this rather recent change in coastline?