The famous Postojna Cave is one of the most beautiful subterranean caves in the world. It extends over almost 22 kilometres of stalagmite- and stalactite-covered passages, galleries and chambers, shaped by Nature over the course of millennia. You are transported into the beautifully illuminated and well-presented interior of the cave by a unique cave train, the only one of its kind in the world, and expert guides are on hand to make sure you enjoy your visit. A visit to the cave is a special experience: cave formations up to six hundred thousand years old hang from the ceiling (stalactites), grow from the floor (stalagmites), meet to form pillars, fold over into curtains or arrange themselves in sequences of fantastic shapes. This is only possible in the Karst underworld.