Postojna cave, Slovenia. Formations inside cave with stalactites and stalagmites.
Schlüsselwörter
slovenia,
stalactite,
stalagmite,
cavern,
cave,
ancient,
attraction,
calcium,
caving,
colourful,
column,
dark,
deep,
europa,
formation,
geologic,
geologist,
geology,
cave,
inside,
interior,
karst,
landmark,
light,
limestone,
mineral,
mountain,
national,
natural,
nature,
park,
rock,
speleology,
stone,
tour tourism,
travel,
underground
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