Every now and then, I visit the Wild Lake (slovenian Divje jezero), located near Idrija. The lake is special in many ways. It is protected as natural monument since 1967. It is small, but goes very deep. The steeply inclined tunnel has been explored to the depth of 160 m. The lake is also the source of the river Jezernica, a tributary to river Idrijca, and at 55 m the shortest river in Slovenia. What I like about the place is the nature. It is surrounded by high rocks and tall trees, and is a very relaxing place with its green waters.