This Civilization Is A Huge Problem For Historians (Michael Button)

The Indus Valley Civilization was one of the largest and most advanced civilizations on Earth.

It built vast cities, developed a writing system nobody can read, traded across the ancient world, and then seemingly vanished.

To this day, historians still can't fully explain how a civilization this sophisticated disappeared from history.

What happened to the Indus Valley?



[Posted at the SpookyWeather2 blog, June 29, 2026.]