The Greatest Civilisation Ever Forgotten? The civilisation that arose in the Indus valley around 5,000 years ago was only discovered in the early 20th century. Andrew Robinson looks at what we know about this extraordinary culture. Andrew Robinson | Published in History Today Volume 65 Issue 12 December 2015 To continue reading this article you will need to purchase access to the online archive. Buy Online Access Buy Print & Archive Subscription If you have already purchased access, or are a print & archive subscriber, please ensure you are logged in. Please email digital@historytoday.com if you have any problems.