1. Typology of the underground
2. Basic characteristics of anthropogenic underground (mining works, military constructions, cellars and underground factories), tunnel transport constructions, collectors and natural underground (caves, pseudo-karst and others)
3. Speleological organizations (cave administration of the Czech Republic and the Czech Speleological Society)
4. Map of the underground of the Czech Republic
5. Selected underground localities of Prague and Central Bohemia
6. Selected underground localities of southern Bohemia and Šumava
7. Selected underground localities of western Bohemia
8. Selected underground localities of the Ore Mountains and the Ore Mountains
9. Selected underground localities of northern Bohemia
10. Selected underground localities of Eastern Bohemia
11. Selected underground localities of Vysočina
12. Selected underground localities of northern Moravia and Silesia
13. Selected underground localities of South Moravia
2. Basic characteristics of anthropogenic underground (mining works, military constructions, cellars and underground factories), tunnel transport constructions, collectors and natural underground (caves, pseudo-karst and others)
3. Speleological organizations (cave administration of the Czech Republic and the Czech Speleological Society)
4. Map of the underground of the Czech Republic
5. Selected underground localities of Prague and Central Bohemia
6. Selected underground localities of southern Bohemia and Šumava
7. Selected underground localities of western Bohemia
8. Selected underground localities of the Ore Mountains and the Ore Mountains
9. Selected underground localities of northern Bohemia
10. Selected underground localities of Eastern Bohemia
11. Selected underground localities of Vysočina
12. Selected underground localities of northern Moravia and Silesia
13. Selected underground localities of South Moravia