Planina and Planina Plain
Planina Plain is the lowest-lying Karst plain in the Notranjska lowlands. Like Cerknica Plain, Planina Plain floods several times a year, turning into a lake. Unica, which meanders through the plain, represents the penultimate part of the river with seven names before it finally surfaces as Ljubljanica. River Unica is a favourite among fishermen: they come from far and wide to dip their hooks into its waters, which are home to graylings, trout, and many other fish.