Risnjak National Park

Listen first. Under the beech and fir trees the air is cool and damp, even in high summer. Moss covers the limestone like a thick green carpet, and it softens every footstep. Somewhere a woodpecker taps, then stops. The light comes down through the canopy in narrow shafts, pale and green. This is Risnjak National Park, high in the mountains of Gorski Kotar. It is one of the quietest corners of Croatia, and one of the wildest.

Gorski Kotar means, roughly, the mountain district. It is the forested belt between the Pannonian plains to the northeast and the Adriatic coast to the southwest. From the city of Rijeka, the sea feels close. Yet only a short drive inland, the climate changes completely. Winters here are long, snow lies deep, and fog can settle in the valleys for days. The park sits at the meeting point of two great mountain systems — the Alps and the Dinarides.

That meeting point matters. Plants and animals from both systems live side by side here. Alpine flowers grow near species more typical of the Balkan mountains. Botanists have studied this area for well over a century, and the region was protected as a national park in 1953. Its borders were later extended to include more of the surrounding forest and the source of the Kupa River. Today it is a compact park, but a very dense one.

Now, the name. Most people link Risnjak to the Croatian word for lynx, which is ris. It is a fitting name. The lynx is a shy wild cat, with tufted ears and a short tail. It once vanished from these forests, hunted out like in much of Europe. Then, in the early 1970s, a small group of lynx was brought from the Carpathian mountains of Slovakia and released in neighbouring Slovenia. Their descendants slowly spread south... and back into Risnjak.

The lynx shares this forest with two other large hunters — the brown bear and the grey wolf. Gorski Kotar is one of the few places in Europe where all three still live together. You are very unlikely to see any of them. They avoid people, and they move mostly at dawn, dusk and night. But you may find signs. A scratched tree trunk. A track in soft mud. Scat on the trail. The forest is full of animals you will never meet.

Here is something many visitors miss. In this limestone landscape, the ground is full of sinkholes — deep, bowl-shaped hollows formed as rainwater dissolves the rock. On still nights, cold air slides down into these hollows and stays there. So the bottom of a sinkhole can be colder than its rim. The result is upside down. Plants that normally grow high on a mountain grow at the bottom of the hollow, and forest trees grow above them. Scientists call this vegetation inversion.

Look at the rock itself. It is pale grey limestone, cracked and pitted, often hidden under roots and moss. Water does not stay on the surface here. It disappears into cracks and travels underground through hidden channels. This is karst, a word that comes from a limestone region on the Slovenian and Italian border. Karst explains why streams are rare in the upper forest. It also explains the remarkable spring waiting at the park's northern edge.

That spring is the source of the Kupa River. The water rises from a deep, rounded pool at the foot of a steep cliff. Its colour is hard to describe — a cold blue-green, very clear, darker in the centre where the shaft drops far below. Divers have explored it, and the bottom lies a long way down. From here, the Kupa flows east and for a long stretch marks the border between Croatia and Slovenia. It begins in silence, almost without a ripple.

The park's main entrance is near the small village of Crni Lug. Its name means black grove, a reference to the dark fir forest around it. From here, an educational trail called Leska makes an easy loop of a few kilometres through the woods. Wooden boards along the path explain the trees, the rocks and the wildlife. The trail is gentle and well shaded. It is a good choice for families, or for anyone who wants the forest without a long climb.

For hikers, the main goal is the summit of Veliki Risnjak, the park's highest point, at just over 1,500 metres. The final climb is rocky and steep, with bare limestone above the tree line. Just below the top stands a mountain lodge named after Josip Schlosser, a nineteenth century Croatian naturalist who studied the plants of this region. On clear days, the view from the summit reaches south to the islands and the open water of the Kvarner Gulf.

The forest changes with height. Lower down, beech and silver fir dominate, tall and straight. Higher up, the trees become shorter and twisted, bent by wind and heavy snow. Near the top, dwarf mountain pine grows low across the rocks, like a dense green mat. In late spring and early summer, small flowers appear between the stones. Walking from the valley to the summit is like walking through several climates in a single day.

The human story here is a quiet one. For centuries, people in Gorski Kotar lived from the forest — cutting timber, burning charcoal, hunting and keeping small farms in the clearings. Wooden houses with steep roofs were built to shed the snow. You can still see this style in the villages around the park. Life was hard, and many families left for the cities or overseas. That slow emptying of the land is one reason the forest has stayed so wild.

So take a moment where you are standing. Notice the temperature of the air on your skin, and the smell of resin and wet earth. Listen for water, for birds, for wind high in the fir trees. Somewhere in this forest, a lynx may be resting in the shade right now, completely aware of you. As you walk on, step softly. Risnjak gives the most to the people who are patient and quiet.