Imagine striding through lush native vegetation, crossing a 3 km underground tunnel, and soaking in views of Tucumán’s Yungas hills — all in one memorable day. This 8-hour trekking experience in Tucumán Province offers just that, starting at the scenic La Quebrada de Lules and taking you past the historic Lules power plant to the Dique del Medio. For only $20 per person, you get a full dose of adventure, nature, and a touch of local history, all guided by expert guides who know these trails inside and out.
What we love most about this tour is how it balances history and natural scenery. First, exploring the Ruin of the old power plant gives you a tangible link to Tucumán’s industrial past, while the panoramic hilltop views reward your physical effort. Second, crossing the Alta Cámara tunnel is an unforgettable experience — a 3 km journey into darkness that makes you feel like an explorer rather than a tourist. As a possible drawback, keep in mind that the 8-hour duration requires a good level of fitness and comfort with long walks. This trip suits travelers who enjoy outdoor activity and discovering off-the-beaten-path sites, especially those interested in history and landscape.
Key Points

- Accessible Adventure: A full-day trek that blends history, nature, and underground exploration.
- Cost-Effective: At $20, this tour offers great value for an 8-hour experience.
- Expert Guides: Knowledgeable guides enhance safety and storytelling.
- Diverse Landscapes: From lush vegetation to panoramic hills and underground tunnels.
- Physical Demand: Requires good fitness; not ideal for those with mobility issues.
- Family Friendly: Suitable for children over 8 years who enjoy active outings.
What makes this experience stand out?

This trek is a rare chance to combine wild Tucumán scenery with a peek into industrial history. Starting in La Quebrada de Lules, the trail takes you through environments filled with native flora, giving a true feel of the region’s natural richness. The highlight is the Lules power plant ruins, where you can learn about how the area’s early energy needs were met — preserved in a way that still sparks curiosity.
What truly sets this tour apart is the underground tunnel crossing. You’ll walk through the Upper Chamber entrance into a dark tunnel stretching 3 km until you reach the Dique del Medio. An authentic underground experience, it’s not just a walk but an adventure that makes you feel like a true explorer. Along the way, you’ll cross the Lules River, adding a refreshing splash of water and a chance to pause and soak in the surroundings.
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Detailed Breakdown of the Itinerary

Starting Point: La Quebrada de Lules
Our journey begins at the roundabout at the end of the route in Lules. From here, the walk kicks off through the picturesque environment of the ravine, flanked by the Yerba Huasi and San Javier hills. The initial stretch is a scenic introduction, with native trees and lush greenery. Guides often share stories about the area’s geology and history, making the walk both educational and engaging.
Trekking through the Trails
Within about an hour, we arrive at the old Lules power plant. This site is a treasure for those interested in industrial heritage. The ruins of buildings, machinery, and the historical structures are a vivid reminder of Tucumán’s energy past. As one reviewer pointed out, “The site is full of history, and I loved seeing the machinery still lying there among the greenery.”
More Great Tours NearbyExploring the Power Plant Area
The guides give insights into the history and architecture of the plant, explaining its significance during Tucumán’s development. The plant’s ruins are intertwined with the native vegetation, creating a striking contrast. The area is perfect for photography and offers a moment to reflect on the area’s past amid nature.
Ascending to the Upper Chamber
From the ruins, we hike up to a place called Upper Chamber, where the entrance to the tunnel is located. Here, the atmosphere shifts from open air to the underground experience. The tunnel entrance is a simple opening in the hillside, but inside, you’re enveloped in total darkness for the next three kilometers.
Crossing the Alta Cámara Tunnel
Walking on foot through the Alta Cámara tunnel is the highlight for many. Despite the darkness, your guides stay close, and the advanced communication tools ensure safety. The tunnel’s length makes it feel like a true adventure, and crossing the Lules River halfway adds a touch of freshness and a chance to catch your breath.
The Dique del Medio and Panoramic Views
Once out of the tunnel, you’ll arrive at the Dique del Medio, a reservoir with impressive views over the hills and lush valleys. This spot is perfect for taking photos and appreciating the landscape. The descent back follows the same trail, completing a full circuit.
Return to La Quebrada de Lules
The trek concludes back at the starting point, bringing your adventure full circle. Along the way, guides often point out flora, fauna, and geological features, making this more than just a walk — it’s an educational journey.
What We Think About the Experience

The value for money is clear — for $20, you’re getting a full day of activity with professional guidance, insurance, and photos included. The knowledgeable guides—certified by AAETAV—are attentive and eager to share insights about the region’s natural and industrial history, which enriches the experience.
The scenery is genuinely stunning, especially the vistas of the Las Yungas hills and the lush environment surrounding the old plant. The underground tunnel crossing adds an element of adventure, making this trek suitable for those who crave active, hands-on experiences.
However, it’s important to note that the tour demands a good level of fitness. The 10 km total walk, plus the uphill sections, may be challenging for those with mobility issues or low stamina. Also, weather can influence the experience — hot days require sun protection, while cooler days might necessitate extra clothing.
Practical Tips
- Prepare for the long walk with comfortable shoes, sun protection, and plenty of water.
- Pack extra clothing for climate changes — Tucumán’s weather can be unpredictable.
- Bring snacks for energy during the hike and a flashlight for the tunnel crossing.
- Consider optional transport from San Miguel de Tucumán if you want to avoid the drive; it’s available at an additional cost.
Who Should Consider This Tour?

If you’re active and curious about how Tucumán’s landscapes and history intertwine, this is a perfect fit. It’s ideal for adventurous travelers looking to escape city life and dive into nature and history in one go. Families with children over 8 years who enjoy physical activity might also find it rewarding, as long as they’re prepared for a full day of walking.
This tour isn’t suited for those with mobility issues, claustrophobia, or heart problems, given the tunnel crossing and uneven terrain. If you prefer shorter, less demanding outings, consider other options.
FAQ

Is transportation from Tucumán city included?
No, but round-trip transportation from San Miguel de Tucumán is available for an additional fee, which can make the trip more convenient.
How long does the whole tour last?
The full experience takes about 8 hours, including walking, exploration, and breaks.
What should I bring?
Comfortable shoes, food, water, sunscreen, insect repellent, a flashlight, and extra clothing are recommended for comfort and safety.
Is the tour suitable for children?
It’s suitable for children over 8 years old who enjoy active outdoor activities.
Does the tour operate rain or shine?
Weather conditions can affect the experience, especially the tunnel crossing. It’s best to check availability and possibly reschedule in heavy rain.
Are guides available in languages other than Spanish?
The tour is conducted in Spanish; check with the provider if you need assistance in another language.
What is included in the price?
Guides, insurance, GPS communication, first aid, photos/videos, and round-trip transportation from Tucumán city are included.
How physically demanding is the tour?
It requires a good level of fitness due to the long walk and terrain. Participants should be comfortable walking several kilometers across varied landscapes.
Are there any restrictions?
Yes, the tour is not suitable for unaccompanied minors under 8 or anyone with mobility or health issues like back problems, vertigo, or respiratory issues.
Can I cancel the tour?
Yes, cancellations are free if made up to 24 hours in advance.
Final Words

This trekking tour in Tucumán’s Quebrada de Lules offers a compelling mix of history, nature, and adventure. It’s perfect if you want to get outside for a full day, challenge yourself physically, and learn about the region’s industrial past in a scenic setting. The cost is reasonable, especially considering the inclusion of professional guides and safety equipment, making it a smart choice for budget travelers seeking authentic experiences.
While it’s not for everyone — especially those with limited mobility or looking for a relaxed day — those who love active sightseeing will find this journey both rewarding and unforgettable. The combination of native vegetation, panoramic hills, and the underground tunnel crossing makes this an adventure worth considering for your Tucumán itinerary.
Happy hiking!
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