This handout satellite photo released on May 6, 2022, by Planet Labs PBC, shows the Azovstal steel plant in Mariupol, on the Sea of Azov, on May 4, 2022. - Ukraine said a fresh UN-led rescue mission was under way on May 6, 2022, to evacuate the last civilians still trapped inside the besieged steel plant in Mariupol that has become the southern city's final holdout against Russian forces. About 200 civilians, including children, are estimated to remain in hiding in the Soviet-era tunnels and bunkers beneath the sprawling Azovstal factory, along with hundreds of Ukrainian soldiers. (Photo by Planet Labs PBC / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Planet Labs PBC " - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS