Battle of Ghunib
1859 CE.
Shown on the map at 42.388°, 46.962°.
The Siege and Storming of Ghunib was a decisive encounter at the mountain stronghold of Ghunib, conducted by Russian forces in August 1859. After 25 years of leading fierce resistance against Russian expansion, Imam Shamil, the leader of the Caucasian Imamate, was captured and forced to surrender, marking the effective end of the Murid War.
Text from the Wikipedia article Battle of Ghunib, licensed CC BY-SA 4.0.