The mysterious underground of the Pokljuka plateau

As water flows underground, it corrodes and widens cracks, creating a system of interconnected underground pathways, fissures, cavities, and channels. In some channels, water flows very quickly, while in others, it can remain for longer periods. When the water reaches an impermeable layer, it flows back to the surface. This spot is called a spring.

The waters from Pokljuka come to the surface in the Radovna and Bohinj valleys.

Many springs are also sources of drinking water.

The karst surface is highly sensitive to pollution. The self-cleaning ability of water underground is less effective, so contamination can reach a spring within hours to days, or it may stagnate and accumulate underground for days, weeks or months. This can be prevented by protecting the surrounding environment and monitoring the physical, chemical, and biological features of the spring.