The oldest cave sites with trails of human presence in Herkove Peči caves above Radlje and Špehovka cave in Huda Luknja.35.000 – 20.000 BC
Prehistoric forts: Grajski Hrib above Stari Trg, Gradišče above Slovenj Gradec, Pigl above Javornik in Ravne.14th – 12th and 8th – 6th century BC
Celtic tribes unite to form the Kingdom of Noricum (Noricum iron).3rd century BC
Romans subdue the Celtic population of Noricum.16th century BC
The Roman settlement Colatio (Stari Trg) and burial ground Zagrad near Prevalje next to the important Roman road and countryside property in Zg. Dovže, Zagrad and Muta.1st – 5th century
Late Antique burial ground on Puščava at Grad above Stari Trg.End of 4th century – 5th century
Samo’s Empire unites the Slavic tribes; it leads to the foundation of the Duchy of Carantania.626–658
Early Antique burial ground on Puščava at Grad above Stari Trg.8th – 9th century
Remains of an early Christian church with an Old Slavic burial ground in the Church of St. George at Legno.9th – 10th century
Carantania (Koroška) acquires the formal status of a duchy.976
First documented mention of Slovenj Gradec.1091
First mention of Črna na Koroškem.1137
The mitnica toll-house begins operating at the Sp. Muta area.1147
First mention of Mežica.1154
First documented mention of Radlje ob Dravi (villa Radela).1161
Dravograd is mentioned as a market settlement with a castle, two mansions, Church of St. Vitus and a mitnica facility.1185
Beginnings of timber rafting on the Drava River.13th century
Henry II of Andechs, margrave of Istria, dies in his castle above Slovenj Gradec.1228
First written mention of Vuzenica.1238
First written mention of Guštanj, today Ravne na Koroškem.1248
Siegfried of Mahrenberg and mother Gisela founded the Dominican monastery in Mahrenberg (Radlje). Berthold V. of Andechs, Patriarch of Aquileia, consecrates the Church of St. Elisabeth in Slovenj Gradec.1251
First mention of Ribnica na Pohorju in land register documents.1266
Ulrich III of Spanheim gives Slovenj Gradec the town rights.Before 1267
The Radlje settlement is presented with market rights.1268
The House of Habsburg takes permanent power (until 1918). First mention of Mislinja. First mention of the Church of Virgin Mary at Jezero (Prevalje historical centre).1335
Oldest dating report on lead ore under Mount Peca in the notes of Carinthian Duke Ernest the Iron.1424
Turks burn and pillage the Koroška region.2nd half of 15th century
First revolt by Slovenian peasants in the Koroška region.1478
The Hungarian army of Matthias Corvinus devastates the Slovenj Gradec and Guštanj castles.1489
The Landstände of the Koroška region build strongholds against the Turks (turške šance) at the entrance to the Mežica Valley.1480 – 1500
Peasant revolt of the Koroška region.1515
The division of the vast Habsburg properties among the sons of Ferdinand I. This finally determines the historical borders of the so-called interior Austrian lands: Koroška, Štajerska and Kranjska.1564
First mention of foundries in Muta.1573
Consecration of the Church of St. Ursula on Uršlja Gora.1602
Melhior Puc from the Lavant Valley inhabits Črna and begins mining iron ore in Javorje. The beginning of foundry in the Mežica Valley.1620
Hans Sigmund Ottenfels receives approval to mine lead ore.1665
Prevalje (Guštanj) parish priest Gašper Pilat founds a scholarship fund for secondary school students.1700
The beginning of ironworks in Mislinja.1723
The Leše Manuscript.1757 – 1761
Counts of Thurn from Bleiburg build the foundry in Mušenik.1774
Emperor Joseph II dissolves the monasteries (the Dominicans leave Mahrenberg).1782
Napoleon annexes the Koroška region to the Illyrian Provinces.1809
Blaž Mayer discovers the sites of brown coal in Leše.1818
Brothers Rosthorn establish a zinc factory in Prevalje; a few years later the production is redirected to ironworks.1822
Counts of Thurn focus on steel production in the Mežica Valley, which later becomes famous worldwide.1827
Construction of a road through the Huda Luknja gorge connected the Koroška region with Central Slovenia.1829
Discovery of the use of brown coals with puddling by August Rosthorn and Josefa Schlegl in the ironworks factory in Prevalje caused a complete turnover in the European ironworks industry.1840
Active years of Anton Martin Slomšek in Vuzenica.1838 – 1844
Construction of the Koroška part of the southern railway along the Drava Valley through Dravograd.1863
Prevalje ironworks ceases activity; the entire production is transported to the upper Austrian Donawitz. Construction of the Mislinja railway between Dravograd and Velenje.1899
The glažuta or glassworks facility in the Josipdol ceases activity; production is redirected to stonemasonry.1909
Downfall of the Austro-Hungarian Empire. The Koroška region becomes a part of the Kingdom of Serbs, Croats and Slovenes on 1 December.1918
Battles for the Northern border.1918 – 1920
Active years of the St. Mohor’s Society (Mohorjeva Družba) in Prevalje.1919 – 1927
The plebiscite results divide the Koroška region to the Austrian and smaller Yugoslavian (Slovenian) part.10 October 1920
Libeliče is joined to the mother country.1922
The brown coal mines in Leše are closed down.1935
The final battles of WWII in Europe take place from 8 to 15 May in Poljana near Prevalje.1945
The secondary school in Ravne is founded.1949
Guštanj is renamed Ravne na Koroškem and becomes a town.1952
The UN General Secretary awards Slovenj Gradec with the title of Peace Messenger City.1989
Severe confrontation at the Holmec border crossing and in Dravograd during the independence war.1991
After 84 years, the two parts of the Koroška region are once again symbolically united after Slovenia joins the European Union2004
Dravograd, Mežica and Prevalje are granted town charters.2005
Slovenj Gradec is the partner city of the 2012 European Cultural Capital.2012