During the 1809 Battle of Čegar, fought during the First Serbian Uprising, Serbian revolutionaries led by commander Stevan Sinđelić were attacked by Turkish forces on Čegar Hill, near Niš. Rather than be captured by the Turks and executed, Sinđelić fired his pistol into a powder magazine, killing himself and all Serbian rebels and Turkish soldiers in the vicinity. Afterward, Hurshid Pasha, the Turkish Grand Vizier of Niš, ordered that a tower be made from the skulls of the killed Serbian revolutionaries.This horrific monument was built along the road to Constantinople, as a warning to anyone rising against the Ottoman Empire.
In 1938 a chapel was built around the Skull Tower to preserve it from further decay. That year, a bust of Stevan Sindjelic, made by the sculptor Stevan Miletic, was placed in the plateau in front of the tower entrance. There is also a bronze plate with the words of the well known French poet Lamartine who mentioned the monument while passing through Nis in 1833: “May the Serbs keep this monument! It will always teach their children the value of the independence of a people, showing them the real price their fathers had to pay for it.“
source: http://www.visitnis.com/the-skull-tower.html
https://en.wikipedia.org/wiki/Skull_Tower
The museum is closed on Mondays
Working hours: Tue-Fri from 9 am till 7pm, Sat/Sun from 9 am till 5 pm
The cache is a small round plastic box with a white lid (open it by turning the lid anti-clockwise). There is a small pen inside but bring your own, just in case.
How to find it? When you cross the black wooden bridge, coming from the parking towards the Skull Tower, turn right, go down the steps and look somewhere under the bridge.