Postojna Cave:

Researchers from Poland, the United States, and Slovenia recently worked out exact equations for stalagmite shapes, then checked them on real cave specimens from Postojna Cave in Slovenia.
- It is located in western Slovenia.
- It is a limestone cave carved out by the Pivka River over millions of years.
- It is the only karst cave with a railway.
- The cave system hosts Proteus anguinus — a blind, colorless, snake-like amphibian, with both lungs and gills, feeding on snails and worms.


