The Ljubljanica (pronounced [ljuˈbljáːnitsa]), known in the Middle Ages as the Leybach,[3] is a river in the southern part of the Ljubljana Basin in Slovenia.

The Ljubljanica rises south of the town of Vrhnika and flows into the Sava River about 10 kilometres (6.2 mi) downstream from Ljubljana.

It has been dated to about 35,000 to 45,000 before present, the Szeletian period, and supplements the scant data about the presence of Stone Age hunters in the Ljubljana Marsh area.

[6] Exactly why the Ljubljanica became an article dumping ground is unknown, but most historians believe that it is related to how local tradition has always held the river as a sacred place.

In 2003, to help curb this trend, Slovenia's national parliament declared the river a site of cultural importance and banned diving in it without a permit.