Archaeological investigations near Vače—north of Klenik and east of Slemšek Hill (680 metres or 2,230 feet)—revealed foundations of a number of houses and graves from an Iron Age Illyrian settlement.
Local farmers found the first graves at the site in 1877,[1]: 286 and organized excavations began in 1878 under Karel Dežman, Ferdinand Schulz (1849–1936), and Ferdinand von Hochstetter.[2] Prince Ernst Windischgrätz (1827–1918) directed excavations from 1879 to 1881, followed by the Academy of Sciences in Vienna in 1881.[1]: 286–287
Further excavations were carried out by Princess Marie of Windisch-Graetz in 1905, 1907, and 1913, by Walter Schmid (1875–1951) from 1932 to 1935, and by France Stare (1924–1974) in 1945.[1]: 287
A local archaeological trail with eleven stops and explanatory signs has been set up in nature, that includes the Iron Age cemeteries and an Iron Age settlement excavated there.[2]