The devastation and chaos of the Syrian conflict is so extensive that a precise death toll is unknown.
Estimates vary considerably, though the figure is often placed at more than 200,000.
The Violation Documentation Center, an NGO which monitors the conflict, keeps records which are backed up by the name, age and gender of the dead, and also where they were killed.
It records 92,556 civilians as 'martyrs.'
Data journalist Kristian Jensen used this information to create an illustration which shows the truly staggering human cost caused by the conflict. Each dot represents a civilian killed.
It first appeared on the Danish website Politiken.
