In 1992, a group of more than 200 Bosnian men was taken to the edge of the ravine and shot dead by Bosnian Serb police. Their corpses are now being recovered.
A new effort is under way to identify more than 100 victims from a 1992 mass killing during the Bosnian war.
The Koricani Cliffs massacre saw more than 200 civilians shot dead and dumped in a ravine by a Bosnian Serb police unit.
It has taken nearly three decades to uncover many of the remains and return them to their families for proper burial.
Paul Brennan reports.