Ždrocle is a fragment of primeval beech forest on the slopes of Snežnik, the big karst mountain in the far south of Slovenia, close to the Croatian border, and it is one of the components of the great European UNESCO listing of ancient and primeval beech forests. That listing stretches from the Carpathians to Spain, but here you are in its Dinaric heart, where beech, fir and maple grow on a chaotic surface of limestone sinkholes, sharp ridges and hollows full of moss. Snežnik itself rises to just under eighteen hundred metres and holds its snow late, which is how it got its name.
This is one of the wildest corners of Central Europe. Brown bears live in these forests in good numbers, along with wolves and lynx, and the karst underneath swallows rivers and spits them out again elsewhere. In autumn the beech woods go gold and copper; in summer they are cool and green even when the coast below is baking. There is no tourist infrastructure to speak of at the reserve itself, which is entirely the point.
Riding here is about forest roads, many of them gravel, which wind for miles through the woods between Ilirska Bistrica, Leskova Dolina and the Croatian side. Some are graded and fine for a road bike taken slowly; others are rough, rutted, and remote, with no phone signal and logging trucks that come round corners fast. On asphalt, the roads around Ilirska Bistrica and down towards Rijeka and Klana have plenty of curves, quiet traffic and broad views of the Brkini hills. Bear in mind wildlife on the road, especially deer at dusk.
Snežnik Castle, on the far side of the mountain in the Lož valley, is a fairytale little Renaissance castle worth the detour, and Cerknica's famous disappearing lake is not far beyond. Leskova Dolina is a tiny hamlet with nothing much; fill up in Ilirska Bistrica, the nearest town with services and a few places to eat, or across the border in Rijeka. Water in the karst disappears underground, so carry some on any forest excursion, and let someone know where you are going if you leave the asphalt.