evidence: The residents of Oleshky in Russian-occupied southern Ukraine could not identify many of those they buried after a catastrophic dam collapse in June sent water coursing through their homes and shattered their lives. The bodies were too bloated and discolored, volunteer rescuers and health workers said. They described seeing faces that resembled rubber masks, frozen in that last frenzied gasp for air. But to those secretly keeping count of the drowned, Yurii Bilyi was no stranger. [...] Russia, which didn’t respond to questions for this article, has said 59 people drowned in the territory it controls, roughly 408 square kilometers (160 square miles) of flooded areas. But in the Russian-occupied town of Oleshky alone, which Ukrainian military officials estimate had a population of 16,000 at the time of the flooding, the number is at least in the hundreds. An exact figure for the dead — in Oleshky, the occupied area’s most populous town before the war, and beyond — may never be known, even if Ukrainian forces retake the territory and are able to investigate on the ground. [...] "A lot of people drowned," said Svitlana, the head nurse at the Oleshky District Multidisciplinary Hospital, the city’s main primary health center, which later transformed into a shelter for people forced out of their homes. The putrefaction of flesh caused many corpses to inflate. "People were floating around the city like balloons."