The battle on the Zerabulak heights is the decisive battle of the Russian army under the command of General Kaufman with the army of the Bukhara emir Muzaffar, which took place in June 1868, on the slopes of the Zera-tau mountain range, between Samarkand and Bukhara. It ended with the defeat of the Bukhara army, and the transition of the Bukhara Emirate to vassal dependence on the Russian Empire.