Now, since IS fighters were driven out of the area, the 32-year-old has returned to his home. But he's haunted by the site. As documented by the aid group Yazda, which has mapped the Sinjar sites, the graves are in a rough pentagon flanking the crossroads, largely unprotected. Around one of them is a mesh fence and a wind-battered sign. As Arkan spoke at the site, a shepherd herded his flock nearby.
"I have lots of people I know there. Mostly friends and neighbors," he said. "It's very difficult to look at them every day."