Lake Cerknica

Lake Cerknica, near Cesta 4. maja 51 in Cerknica, Notranjska, is Europe's largest intermittent lake, lying about 45 km south of Ljubljana. It fills and drains several times a year through underground karst channels, changing from an open lake to meadow and back. The trip takes 45-60 minutes: an Arriva coach from Ljubljana bus station costs about EUR 5 and takes 50-60 minutes, while drivers take the A1 motorway or Route 6 in about 40 minutes. A rail route via Rakek requires a local bus. Cyclists can follow the Krim and Ljubljana Marshes routes. From Cerknica bus station, the Dolenje Jezero shore and the info point are 2-3 km away, reachable by walking or taxi. When the lake is flooded, usually from autumn through spring, seasonal boat trips and kayaking are possible; when dry, the basin is used for walking, cycling and bird-watching, with more than 200 species recorded. The surrounding Notranjska region includes Rakov Skocjan, a natural bridge valley, and Krizna Cave, which costs about EUR 15-16 and is known for its underground lakes. A suitable one-day arc is a morning coach, a walk around the Dolenje Jezero shore and lake observation points, lunch at a village restaurant serving local specialties such as lake fish or game, and an afternoon visit to Krizna Cave or Rakov Skocjan if transport permits, since these need a car or taxi. March to June and October to November are the best months for a flooded lake, though water levels vary from year to year, so checking the lake status on the official website beforehand is wise. Total transport costs about EUR 8-10 return. Comfortable shoes, binoculars and a layer for wet ground are useful.