Zelnjske Jame Caves
The Zelnjske Jame Caves, located near Kocevje, are easily accessible to anyone because they are not particularly deep. The Rakov kocjan Nature Reserve includes Zelnjske jame. The cave is accessible by public trails, and you can explore the first half of the cave and then go from one polje to the next because one of the routes runs between the caves. This cave is a lot of fun to explore and has a lot of unique karst features. The speleothems are small, predominantly moonmilk speleothems.
The cave is part of a massive cave system that is already collapsing. Today, certain parts of the cave, known as Polje, are valleys. Natural bridges are other, extremely brief sections of the cave. Some of the system's lengthier sections link valleys and allow you to follow the river to the next polje.
The genuine start of the Zelke jame cave system is closed by an iron gate at the eastern end of the dolines. Cave trekking trips can be taken to this section of the cave, which is part of a four-kilometer-long cave system. There are two trips available: one to the cave's dry section and another by boat to the cave's river section. Professional caver equipment is given, including overalls, helmets, headlights, and boots. Reservations can be made over the phone or at the Rakov Hotel.
While this isn't one of the country's most popular cave systems, it is quieter, allowing you to explore the cave on your own. Of course, there are a plethora of gorgeous stalactites and stalagmites to discover, and the enormous underground rooms provide a fascinating view into the subterranean world.
Length: unknown
Location: Postojna,Slovenia