Only posting this video because the city was amazing...
China’s submerged Lion City may be the most spectacular underwater ruins of the world, at least until more of Alexandria is explored. It’s located about 85-131 feet beneath the surface of Thousand Island Lake (Qiandao Lake), in an area that was intentionally flooded in the 1950s to create a dam. Lion City (Shi Cheng) was built during the Eastern Han Dynasty (25-200 CE) and measures about 62 football fields in area. It’s unclear why the Chinese would have flooded such spectacular historical structures, which are covered in dramatic relief sculptures.
Well that thread did not turn out like I thought it would ! videos are jumbled and in the wrong spot.. Sorry still some good info to look at.. The first video is of a city flooded about 50 years ago in China to make a Dam.. I found the maps of the last Ice age interesting especially the exposed land masses due to sea level drop.
That is a lot of land which history may have happened on when it was coast line...but is far underwater now. Especially considering current migration and settlement patterns. People live on the coasts. World wide. So...that could be a whole period of history lost in whole parts of the world.
By the way, I'd looked into this myself last year in thinking about a thread, so however the thread went for presenting? The basics are certainly real and a real interesting thing. There is A LOT of land going outward at that old depth/sea level point. Amazing to consider.
It also means little things like the Pyramid reportedly viewed within shifting bottom muck off the Florida coast would have been well above water and actually some distance inland at that point in history. Now, if reports have been accurate, more or less encased in bottom mud which is known to be quite the helper for preserving things. A reasonable explanation for why it would still be around at all to have been seen by anyone.
Who really knows, if we allow for the possibility that Earth wasn't devoid of some level of civilization at that point.