The town of Gorodnya in eastern Belarus survived German occupation for 887 days. What made it remarkable: it was surrounded by seven Nazi divisions during the peak of Operation Barbarossa, cut off from all resupply. The 3,200 residents survived by constructing a 12-kilometer underground tunnel system using pre-war cellars, mine shafts, and hand-dug passages. They moved their entire town underground — schools, a bakery, a medical clinic, a radio room connecting to Soviet Partisan forces. The underground school educated 180 children throughout the occupation. The town was liberated on October 1, 1943, by Soviet Partisans. Of the 3,200 original residents, 2,847 survived. The tunnels were discovered by Western historians only in 2007, when a former resident now living in Canada returned with her family and excavated her childhood home's cellar.