Bükk National Park

Listen first. Under the beech trees the air is cool and damp, even on a warm afternoon. Last year's leaves crackle under your boots, and somewhere below the path, water moves over stone. The light comes down green and broken through the canopy. This is the Bükk, a limestone upland in northern Hungary, and its name is simple. In Hungarian, bükk means beech. Once you notice those smooth grey trunks, you will see them almost everywhere you look.

Bükk National Park was created in 1977. It covers a wide band of hills between the cities of Miskolc and Eger, mostly here in Borsod-Abaúj-Zemplén County and partly in neighbouring Heves. It is one of the largest national parks in Hungary. Most of it is forest. The hills are not tall by alpine standards. The highest summits rise to just under a thousand metres. Their character comes from what lies underneath — stone, water, and a long, slow conversation between the two.

That stone is mostly limestone, laid down as sediment on the floor of ancient seas many millions of years ago. Later, the earth pushed it up into these hills. Rainwater is slightly acidic, and over time it dissolves limestone. The result is called karst — a landscape full of sinkholes, springs that appear and vanish, and caves. Geologists count many hundreds of caves in the Bükk. Up on the high plateau, look for round hollows in the meadows. Those dips are sinkholes, where the ground has slowly settled into empty space below.

Here is the first thing many visitors miss. The caves of the Bükk are not only geological. They are archaeological. Szeleta Cave, near Miskolc, gave its name to the Szeletian culture, a group of Stone Age tool traditions from the Palaeolithic period, the Old Stone Age. Archaeologists found finely shaped stone points there. Other caves in these hills held animal bones and traces of human visits. People sheltered in this rock long before anyone drew a border or built a village nearby.

On the eastern side of the park, the road from Miskolc climbs into a narrow valley and arrives at Lillafüred. It is a resort settlement beside Lake Hámori, a reservoir held back by a dam. A large stone hotel in a romantic, castle-like style stands above the water, with terraced gardens below it. Near the hotel, a waterfall drops down a mossy rock face. The scene feels a little like a painting from another century, and that is part of its charm.

Two caves sit close to Lillafüred, and they are very different. Anna Cave is formed in tufa — a soft, porous rock built up by mineral-rich spring water as it flowed over moss and plants. Inside, you can see the shapes of old leaves and stems preserved in stone. Saint Stephen Cave, nearby, is a more classic limestone cave with dripstone formations. Both are usually visited on guided tours, and both stay cool all year, so bring a layer.

One gentle way to reach Lillafüred is by narrow-gauge forest railway from Miskolc. The small train rattles through the valley under the trees. These lines were first built to carry timber out of the forest. Today they mostly carry walkers, families and curious travellers. Sit near a window, let the forest pass slowly, and listen to the wheels on the rails. It is an old rhythm, and it suits these hills well.

On the western side, near the village of Szilvásvárad, lies the Szalajka Valley. A clear stream runs through it, and a path follows the water upstream past small pools and pale rock. The highlight is the Veil Waterfall. Here the water does not fall in one plunge. Instead, it spreads in thin sheets over steps of travertine, a stone made from minerals in the water. The steps are still growing, very slowly, as the stream deposits new layers.

Szilvásvárad is also known for horses. The village is a centre for breeding Lipizzaners, the elegant, mostly white horses associated with classical riding schools. You may see carriages on the lanes or horses grazing in the fields near the edge of the forest. It is a reminder that the Bükk is not wilderness alone. People have lived around these hills for centuries, making charcoal, cutting timber, burning lime, and raising animals.

Now for the second surprise. In the southern foothills of the Bükk stand the so-called beehive stones. These are cone-shaped rocks of soft volcanic tuff, a stone made from compacted volcanic ash. Their sides are carved with small rectangular niches. Who carved them, and why, is still debated. Locals say they once held beehives, which gave the stones their name. Other explanations point to ritual or memorial use. Nobody can say for certain, and that open question is part of their pull.

The forest itself deserves slow attention. Beech dominates the higher slopes, while oak becomes more common lower down and on the warmer southern sides. In spring, the forest floor fills with wild flowers before the canopy closes overhead. In autumn, the beeches turn copper and gold, and the leaf litter smells sweet and earthy. The park protects many rare plants and animals, including birds of prey and a range of bats that roost in the caves through winter.

If you walk up onto the high plateau, the mood changes. The trees open into wide grassy meadows, with views over rolling forest in every direction. Wind moves across the grass. On a clear day, the light here feels sharper than in the valleys. Walking trails are marked with painted symbols on trees and rocks. Follow them carefully, because the forest is large and the paths can look alike. Water and good shoes matter more than speed.

So pause for a moment where you are now. Look at the ground beneath you, and remember that the stone carries the memory of an ancient sea. Look at the grey trunks of the beeches, and the light falling between them. As you walk on, listen for running water — a stream, a spring, a drip inside a cave. That water shaped this whole landscape, and it is still at work, quietly, under your feet.