The Associated Press estimated at least 10,300 new graves in and around Mariupol — most in the Staryi Krym cemetery — by analyzing satellite imagery from early March through December, noting sections where the earth had been disturbed. AP measured each grid section where the cemetery had been expanded and calculated the total space occupied by new graves to be more than 51,500 square meters. AP then reviewed drone and video footage that showed the Russians had used heavy machinery to dig long trenches which were then filled back in. The graves were visible as dirt mounds, sometimes with wooden crosses bearing names and dates but mostly with hand-scrawled numbers on small placards. A few graves were marked with more than one number, potentially indicating more than one set of human remains.
via apnews: How the AP estimated 10,300 new graves in occupied Mariupol