Battle of Čegar
1809 CE.
Shown on the map at 43.365°, 21.943°.
The Battle of Čegar (Serbian: Битка на Чегру/Bitka na Čegru), also known as the Battle of Kamenica (Бој на Каменици/Boj na Kamenici) took place during the First Serbian Uprising between the Serbian Revolutionaries and Ottoman forces near the Niš Fortress on 31 May 1809. Fought on the Čegar hill situated between the villages of Donji Matejevac and Kamenica near Niš in what is today southeastern Serbia, it ended in an Ottoman victory. Commander Stevan Sinđelić famously blew up the gunpowder magazine when the Ottomans overtook his trench, killing everyone in it. Skulls of dead Serb rebels were embedded into the Skull Tower.
Text from the Wikipedia article Battle of Čegar, licensed CC BY-SA 4.0.