Postojna Cave for 25 November 2025

Postojna Cave Latest News

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.

About Postojna Cave

• It is located in western Slovenia.
• It is a 24 km long cave carved out by the Pivka River over millions of years. 
• It’s made of limestone, and each 1 cm of growth takes around 100 years.
• The Pivka River enters the Postojna cavern 18 m below its mouth, runs underground, and reappears as a spring in the Planina Plain.
• The caves were officially discovered in the 1800s (although graffiti in the caves dates back to as early as the 1200s), and have been open as a tourist attraction since 1819.
• It is the only karst cave with a railway, which was built more than 140 years ago. 
• The cave system hosts Proteus anguinus — a blind, colorless, snake-like amphibian about 30 cm long, with both lungs and gills, feeding on snails and worms.

Source: EARTH