The author, a speleologist and a mineral collector, also represents various minerals and ores pertaining to a certain passage. This book significantly contributes to the awareness of the rich mining history in Slovenia that is nearly forgotten.

1. Saint Ana’s mercury mine, 6
– Julij’s passage, 14
– August’s passage, 17
– Fridrik’s passage, 18
– Jakob’s passage, 20
– Anton’s passage (main passage), 21
– Jurij’s passage, 25
– Alojzij’s passage, 25

2. Mine underneath Korosica (sfalerite, zinc),27
3. Pocivalnik above Trzic (copper), 31
4. Mining passage underneath Sija (iron), 37
5. Stegovnik (copper, pirite), 38
6. Mining passage above Trzic (iron),42
7. Manganite mine at Begunjscica, 45
8. Korl’s passage of the Sava cave (siderite), 51
9. Jelovica Cok (iron), 57
10. Manganite mine at Smarjetna gora, 61
11. Skofje, Cerkno (copper), 65
12. Nova Oselica (iron), 68
13. Bodoveljska Grapa (copper), 7
14. Knapovze, Trnovec, Medvode (lead), 74
15. Markovo, Tuhinjska Valley (kaolin), 81
16. Motnik, Tuhinjska Valley (coal), 81
17. Krasnja (flint), 85

18. Lead mine Sitarjevec, Litija (lead, mercury, barite), 89
– August’s passage, 92
– Export and main passage, 97
– Alma passage, 99
– Grol’s passage, 107
– Ventilation passage, 113

19. Reka gozd (lead), 115
20. Maljek (lead), 177
21. Pustov mlin (lead), 119
22. Bohor above the Zveglic farm (lead), 120
23. Janez’s ditch Pohorje (pirite), 122
24. Okoska gora (galenite), 124
25. Studence, Piresica (iron), 126
26. Tofant mine near Piresica (iron), 130
27. Loznica underneath Vranjek (bauxite), 132
28. Skorno near Sostanj, research passage Penk, 136
29. Passage in Plentakov Kozjak, the Mislinja ditch (flint), 139
30. Zilè’s cave, the Mislinja ditch (iron), 142
31. Remsnik, Kobansko (lead – copper), 148
32. The Velenje coal mine, 150