Far Cry 3 - Love Eternal

This mission is located west and a little south from the Northview Gas outpost, from a woman inside one of the buildings. She tells you that her daughter is dead and that he husband help caused it. Her daughter's husband wants to dig up the grave of her daughter and get the ring, but she wants you to scare him. Go to him on the hill and talk to him. Shoot the ground at his feet and the other two men nearby will start shooting at you, so kill them both and then return to the woman for your reward ($500).