Radensko Polje Landscape Park – mysterious intermittent lakes

Radensko Polje Landscape Park near Grosuplje is a remarkable karst landscape where water, meadows and underground features constantly interact. It is the smallest of Slovenia’s more prominent karst fields and is best known for its intermittent lakes, sinkholes, wet meadows and three watercourses that shape the area through the seasons.

Why visit Radensko Polje

This is a good choice for a relaxed half-day or full-day outing focused on nature rather than attractions. The park offers a close look at karst features such as temporary waters, ponds, dry channels, floodplain woodland and cave systems. Because the water level changes from day to day, the landscape never looks exactly the same.

What to see

Key natural highlights include the Dobravka, Zelenka and Šica streams, plus the karst caves and sink features linked to Zatočna jama, Lazarjeva jama and Viršnica. Marked trails are the best way to explore. Be aware that, during high water, some paths may be flooded or impassable.

Frog House and guided visits

If you want an interpretive stop, the Frog House nature conservation centre in Mala Račna is the main visitor point. Official information states that from 1 May to 31 October it is open longer on weekends, while in winter weekday visits are for announced groups only. For current opening times, guided tours and any seasonal changes, always check the official website before you go.

Practical tips

The park can be visited in most seasons, but conditions are especially sensitive after rain. Spring, early summer and autumn often give the best balance of scenery and walkability. It is a good option for families and anyone looking for a quiet nature escape close to Ljubljana.