So about 13.000 BP whe have a great civilazation growing on the fertile plains between OTL's Greater Sunda Islands,
With Small cities and towns in the Highlands of Sumatra, Java, Borneo.
It has crossed the Banda Sea into the plains of the Arafura Sea. But has yet to push into the highlands of New Guinea or Australia.
It has trading cities established along the China coast, and around the Indian ocean
Then just by chance a Meteor [Arizona Crater, or that Australian Crater size] hits the Banda sea, causing a major tsunami.
as they start to rebuild, the rising waters from the end of the ice age force an abandonment,
On the Arafura Plains the survivors flee into the highlands giving rise to the legends of the Dreamtime, as they regress into the Stone Age.
From the Java plains survivors flee into the Sumatra and Java highlands,
Longer settled they don't regress as far, and within several thousands years will be the pre Hindu civilizations of OTL.
Some end in the Indus plain, where they are pushed north into the Valley forming the Indus Civilization, that so puzzles modern archaeologists due to having no known precessor.
One group takes ship, along with with it's goods and Animals and flees to southeast Africa.
There they trek inland, With legends of terrible things coming from the sea, they will stay away from the Shoreline.
Here isolated from Europe and Asia they will have civilization rise and splinter and rise again.
With Small cities and towns in the Highlands of Sumatra, Java, Borneo.
It has crossed the Banda Sea into the plains of the Arafura Sea. But has yet to push into the highlands of New Guinea or Australia.
It has trading cities established along the China coast, and around the Indian ocean
Then just by chance a Meteor [Arizona Crater, or that Australian Crater size] hits the Banda sea, causing a major tsunami.
as they start to rebuild, the rising waters from the end of the ice age force an abandonment,
On the Arafura Plains the survivors flee into the highlands giving rise to the legends of the Dreamtime, as they regress into the Stone Age.
From the Java plains survivors flee into the Sumatra and Java highlands,
Longer settled they don't regress as far, and within several thousands years will be the pre Hindu civilizations of OTL.
Some end in the Indus plain, where they are pushed north into the Valley forming the Indus Civilization, that so puzzles modern archaeologists due to having no known precessor.
One group takes ship, along with with it's goods and Animals and flees to southeast Africa.
There they trek inland, With legends of terrible things coming from the sea, they will stay away from the Shoreline.
Here isolated from Europe and Asia they will have civilization rise and splinter and rise again.