I think there was an asteroid or comet swarm impacting in that time frame but, I'm not going looking for it now.
A volcano or tsunami might have gotten them thinking about new places to live.
Or, maybe they knew of the destination in advance from other travelers and thought it would be better.
Or, maybe the leader was crazy and commanded them to build a thousand boats.
I think there was an asteroid or comet swarm impacting in that time frame but, I'm not going looking for it now.
I think there was an asteroid or comet swarm impacting in that time frame but, I'm not going looking for it now.
My theory is that it was something even more formidable: a man with an idee fixe.
As for Sundaland...'Sundawater.