While the distinction of big mountain groups, which shape so characteristically the landscape of Slovenia, is quite clear, I got recently confused how to classify the mountains and hills of Central Slovenia. Do they still belong to the Alps, or to Dinarides? If they do belong to Alps, to which major group? The hills/mountains of Zasavje are never mentioned as a part of Kamnik and Savinja Alps. And the stretch north-east of Zasavje group is only rarely mentioned as a prolongation of Karawanks. So, I spent some time inspecting maps, reflecting on what is written about this subject and here a proposal, open for critics is written.
On the map below you can see the borders among the five big groups, but also that I am attaching the hills/mountains of Central Slovenia to three of the main groups. So, we can speak about the foothills of: Julian Alps, Kamnik and Savinja Alps and Karawanks.
The Dinarides (5)The Dinarides (or Dinaric Alps) are excellently described on their SP page. And so is their border towards the Alps. Before discussing the border, let's mention one quite distinguishing characteristics: The easternmost groups of Southern Alps are running predominantly in the east-west direction (certainly Julian Alps and Karawanks), while Dinarides are running in the northwest-southeast direction.
The dilemma where do the Dinarides end and Alps start is the biggest in the northwesternmost part of Dinarides. While the plateaus of Banjščice and Trnovski gozd are clearly belonging to the Dinarides, the limestone mountain of Sabotin, rising on the other side of Soča valley could be both. As it is in a way prolongation of the ridge of Korada and Kolovrat, let's put it into the foothills of Julian Alps. Italian authors are speaking about the Prealpi Giulie.
The rest of the border between Julian Alps and Dinarides is clear. From Most na Soči it runs by the valley of Idrijca river - that's the so-called Idrija geological fault. But northeast of it, it's not Julian Alps, but Julian Alps Foothills. From the southern edge of Ljubljana basin, the border further goes by the line towards Novo mesto and Zagreb. North-northeast of this line there is the hilly area of Zasavje (the hills/mountains around Sava river).
The Julian Alps (1, 1a)
Kamnik And Savinja Alps (2)Karawanks and Kamnik and Savinja Alps is described on the relevant SP pages. But only till the towns of Šoštanj and Velenje, where the high areas of both groups end.
Zasavje Hills (2a)
Karawanks (3)SP page. On the north, that's the valley of Drau/Drava river, on the south the valley of Sava river and the quite complicated border to the group of Kamnik and Savinja Alps. But, also Karawanks are having their foothill mountains...
Karawanks Foothills (3a)
Crystalline Range (4)Szani, for inventing it!). So, the massifs of Strojna, Kobansko and Pohorje are made of metamorph rocks, like tonalite.
All the remaining elevations of the eastern Slovenia are only the hills, bordering the big Pannonian plane. They only rarely exceed the altitude of 400 meters.
SummitPost PagesAll the high mountain groups have been described on distinct SP area pages:
Foothills of Julian Alps is a subgroup page, already attached to the page of Julian Alps.
Zasavsko hribovje has not yet its own group page, nor have it the Karawanks Foothills.