As the sea rolled in, there would be mass migration from the sinking Sundaland Continent. It was likely triggered by an unknown mega catastrophe, which according to scientific detected observation data, "led to a sharp decline of the world population, emergence of many civilizations and the people memories (legends, myths, tales) around the world, such as that of Atlantis. The dispersal is also detected by the genetic studies." This was one of the most well-known examples of such abrupt change.1
Interestingly, the scenarios supports the claimed link between Sundaland and Plato’s Atlantis. The ancient Greek philosopher, describes Atlantis as a powerful and advanced kingdom that sank beneath the sea around 12,000 years ago. The time frame and size of the sunken Continent of Sundaland meets Plato’s description of Atlantis. Along with its topography, climate, flora and fauna together with aspects of local mythologies, all permit a convincing case to be made to support this idea.2
However, all we know is that climate change occurred and it marked the end of the Ice Age, and the accompanying rise in sea level would cause the Continent of Sundaland to sink below the Java Sea. Within this general time frame, the charts below depict the frequency and diversity in the population settlement history of the islands of Southeast Asia that were left behind when Sundaland sank below the sea.
I have yet another ancestray sub lineage to investigate O2a2b2a1a (Genetic Marker F1903). Doing so, I will consider several theories as to the destinations of my genetic ancestors beyond the immediate Southeast Asia.
For example, Historical Archaeologist, James Edward Sved suggests my Southeast Asian genetic ancestors may have island-hopped their way to South America sometime with the Ice Age glaciers meltdown and Pole shift. He explains, "Currently, Earth's poles wobble between approximately 22 and 24 degrees. When you consider the location of the North American glacier prior to the melting 20,000-12,000 years ago, it seems likely that the "North Pole" used to be almost 10 degrees closer to Canada. What would this do to Antarctica? It would put it more in the temperate locale of, say, New Zealand - not entirely and perpetually frozen, and not covered with Ice.
In my scenario, with sea levels considerably lower than they are today (120 Meters), the
aforementioned ancients could have paddled from island to island (There were many more
islands above-water then), walked across a section of Antarctica, and right onto South