When full, Lake Cerknica is the largest in Slovenia

What’s the largest lake in the country? The answer: It depends. The reason for the confusion: The country’s largest lake is also an intermittent lake. An intermittent lake is one that changes size, usually with the seasons. When full, Lake Cerknica is the largest lake in Slovenia. It is also the largest intermittent lake in all of Europe. When the lake fills up in the spring, it can reach close to 40 square kilometers in surface area. It’s an important bird refuge, a protected natural area and downright beautiful – if the disappearing lake is there when you go see it.