We tend to think of archaeological sites as dead silent – empty ruins left by past cultures. But this isn't how the people who lived in and used these sites would have experienced them.
Social media is notoriously unsuitable for population studies, but these researchers have found a way to make the bias work in their favour.
On printed maps, piling on the detail risks obscuring the meaning. This new digital map is really more of a database from which users can create different versions that match their own interests.