From 16 June 1942, the Germans kept coming closer to Sevastopol. Even the Red Army knew the end was coming.
Map: the Battle of Sevastopol, June 1942

Historical photos

Sources:
Clayton Donnell, The Defence of Sevastopol, 1941–1942: The Soviet Perspective. Barnsley, South Yorkshire: Pen & Sword Books, 2016
Antony Beevor, The Second World War. London, UK: Little, Brown and Co., 2012.
Petr A. Morgunov, Heroic Sevastopol. Moscow: Nauka, 1979 (Cited in Donnell, The Defence of Sevastopol, 1941–1942.)
Anthony Tucker-Jones, Slaughter on the Eastern Front: Hitler and Stalin’s War 1941–1945. Stroud, Gloucestershire, UK: The History Press, 2017
Wikipedia: various pages.