The old fortress named Svrljig Grad is located on the left bank of the river Timok, on the high mount rock above the mouth of the Belica River, in the most beautiful and the most inaccessible part of the Niševačka/Svrljiška gorge.

The fortress was used to protect the important road communications that passed through the gorge of Svrljiški Timok. The votive marble tile dedicated to Heri Sonketeni from the middle of the first century BC originates from this very fortress.

NIŠEVAC GORGE only 6 kilometers from Svrljig, one of the most beautiful gorges in the eastern part of Serbia is located amongst the naturally created cliff, hiding within itself a very rich cultural and historical heritage. With a length of 1.5 kilometers, it is an integral part of the 15-kilometer-long gorge Svrljiška leisure, which, with its faded meanders and curved beauty, is standing side by side with some of the most beautiful parts of our country.
Carved into the calcium-carbonate walls of the Mesozoic age, it was considered to be a pond in the Neogene. It contains layers of zoogenic calcium carbonate, rich in fossil remains from the Neogene period. Due to its perfect natural predisposition, the gorge has always been inhabited by people. The cliffs were found with traces of the Trach civilization from the Neolithic period, especially the tribe Timahi was dominant, inhabiting these areas over the period of time by which the river Timok was named.