podzemne
Podzemne is a term that generally refers to anything located or occurring beneath the surface of the earth. This can encompass a wide range of natural and man-made features. Natural underground formations include caves, caverns, and subterranean aquifers, which are bodies of groundwater held within porous rock or sediment. Geothermal heat sources are also found beneath the surface.
Human activities have also created extensive underground networks. These include mines for extracting minerals and fossil