Exploring Rovinj’s Underground Fortress: A Deep Dive into the Tunnel Abseiling Plus Tour
If you’re looking for an adventure that combines history, adrenaline, and a bit of mystery, the Tunnel Abseiling Plus tour in Rovinj might just be your perfect match. This experience invites you to explore a 550-meter-long underground WWII fortress, offering a chance to descend vertical rock faces and navigate through high underground chambers. It’s a unique way to get a closer look at Croatia’s hidden gems, especially if you’re into outdoor activities with a dash of history.
What we really love about this tour is how it balances thrilling physical activity—abseiling in a foreign setting—with engaging historical storytelling through audio-visual effects. Plus, the wine tasting at the end adds a relaxing touch to an adrenaline-filled adventure. On the flip side, a potential consideration is the temperature in the underground space, which stays around 14°C, meaning you’ll want to dress warmly.
This experience suits those who enjoy active outings and aren’t afraid of heights or dark, enclosed spaces. It’s particularly good for travelers who want a bit more than a typical sightseeing tour and are comfortable with guided physical challenges. If you’re curious about history, adventure, or just looking for an unusual story to tell back home, keep reading.
Key Points

- Unique underground setting with WWII history and natural architecture
- No prior experience needed for abseiling, with professional guidance
- Includes audio-visual effects that enhance the storytelling and immersion
- Limited group size (max 8 travelers) ensures personalized attention
- Comfortable yet challenging descents suitable for beginners and thrill-seekers
- Wine tasting at the end provides a relaxing finish to the tour
What Is the Tunnel Abseiling Plus Tour in Rovinj?

This tour takes you beneath Rovinj’s surface into the underground World War II fortress. It’s a mix of history, adventure, and a little bit of mystery—a chance to explore a site that was once forgotten, now transformed into an interactive experience. You’ll move through high underground chambers built in concrete and walk through a 550-meter-long tunnel system, revealing parts of Croatia’s hidden past.
The highlight, of course, is the abseiling—a safe, guided descent down rock faces inside the fortress. But what makes this tour stand out is the additional challenge for the bravest: turning off your head torch and finding your way out in total darkness. That’s not something every tour offers, and it adds a sense of adventure and accomplishment.
The journey concludes with some social time and wine tasting, making the whole experience not just about adrenaline but also about connecting with fellow travelers and unwinding after the activity.
Planning more time in Rovinj? We've covered other experiences worth considering.
The Itinerary Breakdown
While the tour is approximately 2 hours and 30 minutes long, here’s how the experience generally unfolds:
Meeting and Introduction
You’ll gather at the Adventurer adventure tours meeting point in Rovinj, where your guide will brief you on safety and what to expect. No previous experience is required, and the team emphasizes professional support throughout.
Entering the Underground Fortress
Once inside, you’ll be immersed in audio-visual effects, including projections that help transport you back in time. As you walk through the fort, you’ll learn about its architecture and history, explained by your knowledgeable guide.
Abseiling in the Fortress
The core activity involves descending rock faces with ropes. The tour offers two levels of difficulty: the standard abseil and the Abseil Plus. The latter includes an additional descent on uneven, slippery cascading rock, which is more demanding but also more thrilling.
The Extra Challenge
Brave participants can opt for the darkness challenge, where you switch off your head torch and navigate your way out of the underground chambers in pitch darkness. It’s a test of nerves and trust in your guides, but it’s optional—no pressure if you’re not comfortable.
Ending and Wine Tasting
After the underground exploration, everyone reconvenes at the starting point, where the tour wraps up with a social glass of wine. This is a relaxed moment to chat about the experience and unwind.
The Experience: What It Feels Like

From reviews, it’s clear that many find this tour genuinely memorable. One traveler mentioned, “Een geweldige ervaring gehad, die indruk heeft gemaakt,” highlighting how impactful and well-led the adventure is. The guides are described as enthusiastic and knowledgeable, making sure everyone feels supported, even if it’s their first time abseiling.
The audio-visual effects seem to add a special layer of immersion—helping you feel part of the fortress’s story. The descents are described as safe and manageable, with instructors providing backup and guidance, making the activity accessible to most.
The darkness challenge is particularly praised for being a fun, trust-building exercise. Although it’s optional, some travelers find it adds a memorable twist that pushes their comfort zone just enough.
The wine tasting at the end receives good feedback, especially for its quality—offering a genuine taste of local Croatian wines and serving as a perfect way to relax after the adrenaline rush.
What’s Included and What to Prepare

You’ll get everything you need—certified abseiling equipment, professional guides, the entrance fee to the underground fort, and insurance. The tour is private, and other dates or times can be arranged if you’re booking for a group.
However, there are a few essentials to keep in mind:
- Warm clothes are recommended because the underground space stays at around 14°C.
- Non-slip shoes are mandatory for safety during descents.
- You should bring adequate footwear and dress appropriately for the underground environment.
- The tour is weather-dependent—bad weather can lead to rescheduling or cancellation.
Cost-wise, at $89.92 per person, it’s a fair deal considering the mix of adventure, history, and included wine. The small group size (max 8 people) ensures a more personalized experience, which many find adds value.
Who Will Love This Tour?

This experience truly suits adventurers who enjoy active, physical activities in unique settings. If you’re comfortable with heights and enclosed spaces, you’ll probably love the challenge and thrill of abseiling inside a historic fortress. It’s also a fantastic choice for history buffs who want to combine storytelling with physical exploration.
The wine tasting component makes it a great evening activity, especially if you’re interested in Croatian wines or want to unwind after a busy day. It’s less ideal for those with severe claustrophobia or epileptic conditions, as some parts involve darkness and confined spaces.
Final Thoughts

The Tunnel Abseiling Plus tour in Rovinj offers an adventure that blends history, adrenaline, and local flavor. The experience’s highlights—abseiling, immersive audio-visual storytelling, and the challenge of navigating in darkness—are crafted to give you more than just a typical sightseeing trip. The guides’ enthusiasm and professionalism seem to make everyone feel comfortable, even if they’re new to abseiling.
At a reasonable price, this tour provides a memorable, active outing in a setting most wouldn’t discover on their own. It’s particularly perfect if you’re after a unique experience that combines physical challenge with cultural intrigue.
Whether you’re a thrill-seeker or a curious traveler wanting to explore Croatia’s underground secrets, this tour offers a compelling reason to step out of your comfort zone—and perhaps toast to your courage with a glass of local wine afterward.
TUNNEL ABSEILING PLUS tour the underground
“Een geweldige ervaring gehad, die indruk heeft gemaakt. Een kundige gids die vol enthousiasme haar tour met ons maakte.”
FAQ

Is prior experience needed for this tour?
No, all abseiling activities are guided and require no previous experience. The guides support you throughout each descent.
How long does the tour last?
The tour takes approximately 2 hours and 30 minutes, including exploration, descents, and socializing at the end.
What should I wear?
Dress warmly, as the underground space stays at around 14°C. Wear shoes with non-slip soles—these are mandatory for safety.
Is the tour suitable for children?
While the data doesn’t specify ages, it’s generally best suited for travelers comfortable with heights and confined spaces. Check with the provider if you’re bringing children.
Can I cancel if I change my mind?
Yes, cancellations are free if made at least 24 hours in advance. Cancellations within 24 hours are not refunded.
What’s included in the price?
All equipment, a guided tour, entrance to the underground fortress, audio-visual effects, insurance, and wine tasting.
What happens in the dark navigation challenge?
Participants turn off their head torches and find their way out in the dark—challenging but optional, designed to test trust and nerve.
Are there different levels of activity?
Yes, the Abseil and Abseil Plus options. The Plus version includes an additional descent on uneven, slippery rock and the possibility of paired abseiling.
Is the environment safe?
Yes, the activity is guided by professional, licensed instructors with certified equipment that’s regularly checked.
Can this be arranged as a private experience?
Yes, private tours and special arrangements are available on request, making it ideal for small groups or special occasions.
If you’re craving a mix of adventure, history, and sensory experiences, this underground abseiling tour in Rovinj is a standout choice. Just remember to dress warmly, bring your sense of adventure, and prepare for a day unlike any other.
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