We have been to Đavolja Varoš during our holiday in October 2013. The attraction is situated about 12 km away from Prolom Banja and about 25 km from Kuršumlija. It is somewhat strange if you come from the direction of Niš. First there is a big sign to give you the direction and after this there is no further information. From Niš you have to follow the road to Skopje and then Prokuplje. A little part of the journey the road connections were bad, especially after Prokuplje. But if you drive carefully the problems are not too big.
The total of the park is not very big and you cannot compare this attraction to Cappadocia. But it is very nice and beautiful and you can make a beautiful walk and visit an interesting wooden church of Sveti (Saint) Petko. There are several sculptures in the park. At the entrance you can taste some of the homemade products of Serbia, especially raki.
The geological formations are very interesting and beautiful but before I had thought the park was much larger. You can spend 2 or 3 very interesting hours but it is very wise if you want to visit this attraction to make a combination with another attraction like visiting the Spa of Prolom Banja or the old churches and monasteries of Kuršumlija (the monastery of Sveti Nicolai).
Or make a combination with visiting the ruins of Caričin Grad (city of the Emperor), dating back to the 6th century.
Also in the region it is beautiful to visit the rivers Toplica, Banjska, Jablanica en Kosanica to walk, to fish or make a picknick.