Adrenaline adventures

Stimulate your heart rate on an unforgettable cycling descent, by extreme hiking to the highest peaks, in an adventure park or in the air.

Wind in your hair, unusual challenges, heartbeat-rising speed, panoramic flight with an airplane, or an adrenaline-filled parachute jump. It is diverse and exciting, be it under, on, or above the Koroška region surface. The wild bike descent through the abandoned tunnels of the Mežica Mine – the Black Hole Trail – guarantees an unforgettable experience. And those of you who rather stay above ground can seek thrill in one of the adrenaline parks where wire ropes, bridges connecting the trees, and other diverse challenges in nature will help you unwind. If you are up for a true endurance test, hit the trail of more than 80 kilometres with ascents to the five highest peaks of the Koroška region in less than 24 hours.

Black hole trail





Podzemlje Pece (Peca Underground) – Tourist Mine and Museum Glančnik 8, 2392 Mežica

Experience the crazy cycling adventure in the Peca underground, suitable only for technically skilled and experienced mountain bikers.

The extreme adrenaline mountain bike adventure in the underground of a former mine is a challenge even for the technically most skilled and experienced.

Black Hole Trail is a special challenge even for the most skilled mountain bikers. The trail runs through abandoned tunnels of the Mežica mine. From the day it closed down to the day they started setting up the trail, no human foot stepped into these tunnels. The vast halls were once filled with tons and tons of lead ore.

The extreme adrenaline mountain bike trail represents an unforgettable adventure even for the most skilled and experienced mountain bikers. The trail is filled with challenges and technically demanding sections. The trail descends over five horizons for about 150 metres in altitude. Every now and then you will encounter very interesting sections, where you can relax for a moment and soak in the endless blackness of the great halls. Of course, if any section is too difficult, you can always conquer it on foot.


The Black Hole Trail has been awarded the Slovenia Unique Experiences – Recommended by Slovenian Tourist Board label since 2023. It is a unique experience included in a carefully selected collection of experiences marketed under the Slovenia Unique Experiences quality brand and supporting the story of green boutique Slovenia and the I feel Slovenia brand.

Theme picker

Do you want to receive a hint about experiences?


Stay up to date with the current tourist services, activities, and excursions.

*indicates required

By giving my e-mail, I agree that RRA Koroška d.o.o. uses my e-mail address for the purposes of informing me regarding the current tourist services, activities, and available excursions. Select how you want to be informed:

The given data shall be used solely for the purpose you agreed upon. The data shall not be disclosed to third parties. You can request to unsubscribe from receiving our newsletter, to change your personal data, and to delete your personal data that we store at any time. You can unsubscribe and request your personal data to be deleted by sending an e-mail to asking to stop receiving information.

We use Mailchimp as our marketing platform. By clicking below to subscribe, you acknowledge that your information will be transferred to Mailchimp for processing. Learn more about Mailchimp's privacy practices here.