BELOW - Ensemble Vocal du Luxembourg

BELOW – A Musical Journey Between Sky and Stone

On Sunday, 5 July 2026, the Slate Museum invites you to experience BELOW, an extraordinary travelling concert performed by the Luxembourg Vocal Ensemble under the direction of Matthias Rajczyk.

Following a route through the museum grounds and the impressive Johanna underground mine, located 42 metres below the surface, visitors will move from one location to another, discovering a series of musical performances in a truly unique setting. Between sky and stone, light and darkness, industrial heritage and artistic expression, the voices of the Ensemble Vocal du Luxembourg will resonate through the underground galleries as well as on the surface, creating a remarkable immersive experience.

Throughout the journey, visitors will encounter several musical stops in different areas of the underground mine. The exceptional acoustics of the galleries will enhance the beauty of the vocal performances. Additional musical moments on the surface will further enrich this artistic and heritage experience.

This musical promenade offers a rare opportunity to rediscover the former slate mine from a completely new perspective, where heritage, music and emotion come together. A unique event for lovers of choral music, history and industrial heritage alike.

Practical Information

📅 Sunday, 5 July 2026

🕑 Departures at 2:00 p.m. and 4:00 p.m.

📍 Slate Museum – Haut-Martelange

💶 €20 per person

⚠️ Advance booking required – Limited places available

A Full Day of Activities at the Slate Museum

Make the most of your visit and enjoy the many activities offered throughout the day:

• Museum, Bistro and underground mine tours open from 10:00 a.m. to 6:00 p.m.

• New permanent exhibition: "ROTHER & MOLITOR: A Photographic Legacy"

• Tourist train operating on the site from 1:00 p.m.

• Barbecue, drinks and refreshments throughout the day organised by the Friends of Slate

A day dedicated to heritage, discovery and music in one of the Ardennes' most remarkable historical sites.