Nick Hawton z Bosny:
No one is sure how many people are buried but it could be as many as seven-hundred, making it more than twice as large as any mass grave so far found in Bosnia.
They are thought to be victims of the Srebrenica massacre, when seven-thousand Muslims were killed by Bosnian Serb forces in July 1995.
The bodies were dumped in numerous graves across the region, and every year more of these sites are discovered.
Weeks of painstaking work lie ahead before forensic experts establish just how many people are buried and then begin the difficult task of identifying them. But this is just the tip of an iceberg.