A picture taken on September 26, 2022 shows sandbags and the letter Z, the symbol of Russian forces, on a wall at an industrial chicken farm, near which the Russian forces were dug in,, near a suspected mass grave in Kozacha Lopan, Kharkiv region, amid the Russian invasion of Ukraine. - Ukraine's latest suspected mass burial site is in a shell-damaged and abandoned industrial chicken farm, on a hill near the Russian border strewn with the debris of battle. It is not known how many bodies lie there -- troops and officials speak of 90 to 100 without saying how they know -- but the signs of recent violence lie in the rubble all around. (Photo by Yasuyoshi CHIBA / AFP)