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Cave Lighting

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Cave Lighting

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Beleuchtungsspezialisten aus Herborn, Hessen. Untertagebeleuchtung als auch Architekturbeleuchtung si restoring attractions, like the Fundata Cave in Romania.

Actually project ‘Cave Lighting™’ is:

a consulting business:
we have hundreds of presentations of our equipment and offer consulting for owners/managers of subterranean landmaks worldwide. about 48 equipped tourist attractions, including:
brand new unique show caves which did not suffer from human activity/damage, like our work in the Herbstlabyrinth Cave in Germany – from developing a business concept and a show cave concept to a complete equipment installation (controlled LED lighting system, FRP route paths, monitoring system). Tours to this cave have not been properly organized before and it was in a poor condition, due to vandalizm. In 2011, Romanian speleologists and our ‘Cave Lighting’ Team cleaned and restored the Fundata cave and turned it into a successful show cave. It was an all-inclusive package of work from planning to the opening of the cave. We partially or completely upgraded/ replaced outdated electrical equipment and redesigned lighting systems in some of the oldest show caves in Europe, Postojnska Jama (Slovenia), Grotte de Clamouse (France), Grotte de Han (Belgium). In some caves we designed and installed electrical power supply systems, lighting systems, music and light systems (DMX-show) and monitoring systems. These were developed according to customers’, (Prometeus) Cave (Georgia), Dechen cave (Germany), requirements. Besides modern lighting and music systems, our project specialists developed an unique software which integrates all of these systems into one network. It also allows remote controlling and if necessary, correct operation of all systems, Höllgrotten Cave (CH), Wendelstein Cave (DE), Erdmanns Cave (Germany), Belianska Cave (Slovakia), together (something similar to a ‘smart home’ system). The ‘Cave Lighting™’ project is constantly developing. We observe modern scientific achievements and cooperate with leading speleological organizations and associations (ISCA, UIS, VDHK, Karst Institute (Postojna), speleological clubs in different countries, etc.). We continue to perfect our equipment and promote our specialists’ self-development. In 2014, we realized the reconstruction of the cave in Germany that made such an unforgettable negative impression on the ‘Cave Lighting™’ creators ten years ago and started ‘Cave Lighting™’.

11/10/2026

✨️ The Leaves Are Going Down. So Are We! 😊 🍁

🍂Come along for a little autumn tour of Slovenia’s underground wonders.

🌬 As autumn settles in and the days grow shorter, we’re taking you on a little tour underground in Slovenia.

👓 Today’s stops: Jezerina jama and Krempljak jama, where we invite you to look closer at the beauty beneath our feet.

📸 Through these images, follow the light across the rock, explore the shapes and textures, and enjoy the interplay of light and shadow.

A change of season calls for a change of scenery—and this time, we’re heading below the surface. Come along, take your time, and fall for Slovenia’s underground wonders.

📷 Photos: Michel Renda

CavePhotography LightAndShadow

04/10/2026

✨️ The people behind the light ✨️

Meet the people behind Cave Lighting — the different minds, skills and personalities that bring each project to life.

Meet Vladimir Vashkevich — Behind the invisible 💻

💡 One button. Light on. Light off.

Simple right?

Well, only because someone has spent years making it look that way.

Vladimir has been part of the Cave Lighting story since its earliest experiments in 2005, when the idea of using LED technology in showcaves was still being tested.
He developed the first lighting system and helped turn those early experiments into technology that could actually work underground.

In those early years, there was not always an office to work from — the project site was often his office. Whether conditions were comfortable or not, development, programming and problem-solving had to continue wherever the work took the team.

🔧 Over the years, he has developed electronics, luminaires and increasingly sophisticated control systems for Cave Lighting projects.

Today, much of his work happens behind the scenes: programming systems, diagnosing faults, updating firmware, adjusting installations remotely and making sure everything works reliably underground.

💻 “When I develop something, I’m in my virtual reality.”

What he enjoys most is seeing months of technical development become something real inside the cave.

🎭 Vladimir often compares a showcave to a theatre: visitors see the final experience, while behind it are cables, control cabinets, communication networks and countless technical details making it all possible.

✨ The goal is simple: complex technology behind the scenes, a seamless experience for everyone else.

27/09/2026

✨️ Paddles Up, Team Spirit on! 🛶

Two weeks ago, the Cave Lighting team traded our usual routine for a day on the river! 🛶

We went canoeing, shared a picnic, and ended the day around a restaurant table.
It was a chance to slow down, have fun, and get to know each other beyond our day-to-day work.

🤝 Canoeing reminded us of something we value at Cave Lighting: moving forward together takes communication, trust, and a willingness to help each other along the way.
That same spirit shapes how we work as a team. We share ideas, bring different strengths to the table, and support one another to make every project possible.

😎 A day full of laughter, good conversations, and great company. We’re already looking forward to the next one! 💡

20/09/2026

✨️ MEET THE PEOPLE BEHIND THE LIGHTS ✨️

Let us introduce you to Tomas Jassus.

👓 At 23, Tomas already knew electricity. Then a cave showed him what light could truly do.

🪨 His first project with Cave Lighting took him into Slovakia’s Belianska Cave. Trained as a construction electrician, he was immediately fascinated by this unfamiliar working environment. It was technical, demanding and unlike anything he had experienced before.

More than ten years later, that fascination remains.

💡 Tomas’s work focuses on the electrical installation: fitting the lights, connecting the electrical boxes and completing the wiring up to the distribution board. It requires precision, experience and the ability to adapt to very different environments—from ice caves and underwater spaces to work at height and other challenging underground conditions.

🔦 What Tomas particularly values is that no two projects are ever alike. Every cave, castle and mine has its own character, atmosphere and technical challenges. Each place requires an individual approach and a solution that respects what is already there.

🔧 Tomas brings Cave Lighting his technical expertise, reliability and deep respect for nature. In return, Cave Lighting has opened new horizons for him. It has allowed him to discover remarkable places, continue developing his skills and meet people who, over the years, have become close friends.

13/09/2026

🎉 Today, we celebrate the International Day of Caves and Karst—a reminder of the beauty, importance and fragility of our underground world. 🗻

🙌 This day helps raise public awareness of the essential role caves and karst landscapes play in biodiversity, water resources and scientific research. It also encourages a shared commitment to their protection.

🙏 Cave Lighting was proud to attend the event at the Herbstlabyrinth–Adventhöhle Cave System, close to our headquarters.
Lighting this remarkable cave was one of our very first projects, almost 20 years ago, making our presence, particularly symbolic.

🧗‍♂️ As you know, at Cave Lighting, we are passionate about caves and the underground world.
Celebrating, respecting and helping to protect these extraordinary environments is central to our philosophy—and guides the way we approach every project.

07/09/2026

✨️ The faces behind the lights ✨️

Meet the faces behind Cave Lighting — the people who bring their unique expertise to projects around the world.

Meet Oleg Klimchuk

💡 Oleg started working with Cave Lighting in 2023.

His story underground, however, began decades earlier.

🧭 Born into a family of cavers, he grew up joining his parents on expeditions. What began as part of childhood became a life shaped by exploration, cave diving, photography and some of the most demanding underground environments in the world.

🌊 In 2005, during a CAVEX expedition to Krubera–Voronya, Oleg became the first caver to reach the bottom of what was then the world’s deepest known cave after crossing four flooded passages.

So when he joined Cave Lighting, the underground itself was nothing new.

The challenge was different.

📸 Photography had taught him to work with composition, perspective, light and shadow. With Cave Lighting, he can use that same eye on a much larger scale — not for one photograph, but for an entire visitor journey.

🔦 As a freelance collaborator, Oleg now works on Cave Lighting projects in different countries, combining his technical underground experience with that visual instinct.

What he particularly enjoys is the creative side of the work: experimenting with beam angles, intensity and colour temperature, and seeing how small changes in light can completely transform the perception of a space.

And caves rarely make things easy.

💧 At Mira Cave in Slovakia, for example, the team installed luminaires directly in an underground river and lakes — a project that brought together several parts of Oleg’s world: caving, diving, technical work and light.

✨ Different skills. Different perspective. Same underground world.

02/09/2026

✨ Where stone, light and story come together…✨️

🤝 Meet Cave Lighting at ISCA 2026: illuminating the future of Show Caves

⏳️ From 22 September to 1 October 2026, the 10th ISCA Congress will bring the international show-cave community together in Dordogne, France 🇨🇵, for an inspiring exchange of ideas, experiences and expertise.

Cave Lighting is delighted to be part of this special event.

📷 The caves pictured here are just some of the remarkable underground sites we have helped transform through carefully designed lighting—revealing their natural beauty while creating unforgettable visitor experiences.

😎 We look forward to meeting show-cave managers and fellow professionals from around the world. See you in France!

💡 Learn more: https://www.grottesdefrance.org/congres-international-des-grottes-et-du-monde-souterrain/

30/08/2026

✨️ The faces behind the lights ✨️

Discover the faces behind Cave Lighting — the people who bring their unique expertise to projects around the world.

Meet Radu Puscas, a Romanian caver with over 4 decades of underground experience.

🪨 Radu’s story with caves began nearly 40 years ago, with an invitation he was not entirely sure he wanted to accept.

🧭 He went anyway — and caving became far more than a pastime. Over the years, Radu became a highly experienced caver, also developing skills in cave diving, underground mapping and cave photography. Today, he describes the underground simply as “a second home.”

💡 Funny enough, Cave Lighting started in much the same way.

In 2019, when a friend suggested he join the team, Radu was sceptical. His world was natural caves, exploration and speleology, and he did not really see the appeal of working in showcaves.

Still, he gave it a try.

His first project was a lighting renovation in a mine in Germany. After several weeks working in the cold, he found himself joking:

😄 “What the hell am I doing here? Miners stop at fifty, and I’m starting at fifty?”

Other projects followed — and, as Radu says, things improved once he learned how to dress properly for the job.

📸 Today, he regularly joins Cave Lighting projects as a freelance collaborator, bringing decades of underground experience and the eye of a cave photographer.

✨ One of the things he enjoys most is seeing some of his own lighting ideas become reality. For a photographer, there is something powerful in that permanence: unlike a photograph, the way a formation is illuminated can remain there for years, becoming part of the experience of thousands of visitors.

🤝 And then, of course, there is the team — passionate people from different countries who understand the underground, exchange ideas and create something together.

Two invitations, decades apart. A little hesitation both times.

🔦 And both ended up leading Radu somewhere he was very happy to go.

Speleology CavePhotography UndergroundWorld

26/08/2026

✨️ Grottes de Han ✨️ Belgium 🇧🇪

🎬 ORIGIN — Sound and Light Show (Edited Excerpt)
By Luc Petit

Deep beneath the Belgian Ardennes, the majestic Salle d’Armes at the Grottes de Han becomes the stage for ORIGIN—an immersive journey through the origins of our universe. ✨

🪨 Located around 110 metres underground, this immense natural chamber is transformed through video mapping, lasers, sound and light, revealing the remarkable formations sculpted by the River Lesse.

🎭 ORIGIN was conceived and directed by Luc Petit, the internationally renowned artistic director, designer and stage director.

💡 Cave Lighting’s contribution focused on the permanent background and pathway lighting.
⚙️ During the final technical phase, we also integrated the show-control system and the cave’s lighting-control system within a PLC network, bringing both systems together in one coordinated control environment.

👀 This video presents only a short edited excerpt from the show—we invite you to visit the Grottes de Han and experience the complete production in its spectacular underground setting.

We are proud to have contributed our underground-lighting and control expertise to this extraordinary experience, where nature, art and technology meet.

📍 Grottes de Han, Belgium
🎭 ORIGIN by Luc Petit

23/08/2026

✨️ The faces behind the lights ✨️

Meet the faces behind the Cave Lighting team- The people whose passion and expertise bring underground worlds to life.

Meet Michel Renda — A lifetime underground

For Michel, caves have never been simply places to visit. They are places to explore, understand, document—and protect.

🧗‍♂️ He began caving in 1975, at the age of 15, and soon developed a passion for underground exploration, science, prehistory and photography. Over the years, Michel also became a renowned speleophotographer, contributing to books and being invited to photograph caves for dedicated projects. His underground journeys have taken him across Europe and much further afield, including several expeditions to Lechuguilla Cave in New Mexico.

🌱 Conservation has always been part of that journey. Michel became deeply involved in protecting karst environments and also worked to strengthen the relationship between traditional cavers and showcaves—two worlds he has always seen as closely connected.

His path crossed with Cave Lighting almost by chance. 💡

🤝 While carrying out an expert assessment for a cave project in Morocco, Michel became involved in discussions about reopening the site to visitors.
A later encounter with Alexander Chrapko at a Cuevatur event in Spain brought them together again, eventually leading Alexander to invite him to help develop Cave Lighting’s presence in France, Spain and Italy.

🇫🇷 Today, Michel is Cave Lighting’s French interface for marketing, communication and relationships, helping connect the company with partners, cave managers and the wider underground community. He brings to that role decades of experience and a very particular way of looking at caves—through the eyes of an explorer, a photographer and a conservationist.

🔦 Because sometimes the best way to work with caves is first to spend a lifetime learning how to look at them.

Adresse

Hohe Str. 700 G. 7
Herborn
35745

Öffnungszeiten

Montag	08:00 - 18:00
Dienstag	08:00 - 18:00
Mittwoch	08:00 - 18:00
Donnerstag	08:00 - 18:00
Freitag	08:00 - 18:00

Telefon

+492772575218

Website

https://www.cavelighting.de/

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