The most beautiful natural sites to discover Idrija

The trail around the lake is often closed because it is located under limestone cliffs from which many rocks are detached. It is formed from a visible geological crack. Its underground source is 83 m deep. When you bend down to observe, a feeling of vertigo surprises you, the sheer drop is impressive. The Proteus anguinus, close cousin of the salamander, lives here. The river Jezernica which rises from the lake is the smallest in Slovenia (55 m).