Đavolja varoš is a rock formation consisting of about 200 earth pyramids or "towers", located in southern Serbia on the Radan Mountain, in the municipality of Kuršumlija.
Wikipedia https://en.wikipedia.org/wiki/Đavolja_Varoš
Facebook https://www.facebook.com/pages/%C4%90avolja%20Varo%C5%A1/111114412250208/
Address Serbia
Coordinates 42°59'35.79" N 21°24'6.615" E