4 ms·

How do they accurately assess the age of these things?

• nigamanth 4y ago
  From the fossils or artifacts of that time, the value will be estimated but even the estimated value shows just how big human history is.
  • ljf 4y ago
    Estimates are around 500BC max - so nothing much in the picture of known human history, and a little too young for fossils. Still amazing, and a culture it would be fascinating to better understand.