The Iron Cathedral. Episode 6: The Singing Cave.
Jürgen returned several hours later.
At first, from the black mouth of the shaft came a sound — a dull echo of boots scraping against stone and heavy, broken breathing amplified by the acoustics of the passage. Along with him, a scent rose from below: dense, almost tangible, the smell of ozone, disturbed stone dust, and ancient stagnant water that had not seen light for millennia. When Jürgen finally grasped the edge of the slab, I saw his knuckles — torn and bleeding. His tactical clothing was covered in a thick layer of grey dust, as if he had literally risen from ash.
But what disturbed me was not his physical exhaustion. It was his face. A mask of absolute, inhuman calm had settled on it — completely out of place after a solo descent into total unknown.
I did not immediately notice the thin silver strand in his hair — flashing like a random glint of light. He did not look afraid. On the contrary, there was something in his eyes — a strange, almost childlike fascination.
“There is something incredible down there, ” he said quietly.
Jürgen was not a man given to emotional outbursts. But this calm unsettled me more than any scream.
When I tried to approach the shaft, his hand snapped shut around my wrist — cold, firm, unyielding. His gaze stopped me completely. In his eyes I caught not fear, but knowledge. Knowledge that cannot be translated into words, only felt in a silent dialogue between stone and sound.
The gesture was unambiguous: don’t.
Jürgen, who had climbed some of the most difficult routes in the world — from the Andes to the Himalayas — had never shown hesitation before. And that was precisely why his warning felt so unsettling.
His powerful headlamp could illuminate even the farthest reaches of the immense cave system. A narrow but intense beam cut through the darkness, revealing details of stone walls and strange geological formations. And who knows what the darkness itself allowed him to see.
I could not rid myself of that thought for a long time — absurd and almost blasphemous — standing near the fresco of the Demon, whose meaning was becoming clearer with each glance.
I dismissed it as exhaustion, as the oppressive acoustics of the hall that could suggest anything to the human mind. Sanctum Ferrum itself affects perception — too precise in its proportions, too exact in its response, too deep in the silence between reflected impulses.
But the grey streak. It had not appeared gradually.
Then Gans’s words. About the gravestone.
What if Jürgen had not seen a symbol? But what was depicted on it?
Not as allegory. Not as imagination. But literally — something sealed.
As if the heart in the fresco was not a metaphor, but a designation. As if the winged figure was not a legend, but a witness.
And if the Cathedral was not built only for worship, but for containment…
No.
I stopped myself. That was impossible.
Sanctum Ferrum is a resonator. Stone. Acoustics. History.
Jürgen simply saw something he was not prepared for.
A man can sometimes be frightened by his own depths.
And yet…
When I recall his gaze, I find it difficult to fully accept my own explanation.
From his account — from which he clearly withheld parts — the following became clear.
Beneath the Cathedral itself lay an enormous cave-temple, which he called “The Singing One.” He had heard its voice long before he reached it.
Sometimes, deep within the general hum, a familiar overtone would emerge — like the sound of wind high in the mountains. Very low. Brief. As if somewhere inside the mountain a massive metal structure was slowly cooling down.
This sound appeared rarely and vanished before Jürgen could determine its source. It resembled neither flowing water nor the cracking of rock. Rather, it felt like an echo of tension that had remained locked within the stone for centuries.
In those moments, it seemed to him that somewhere beneath the thickness of the granite lay the source of this resonance — something ancient, heavy, and immovable. Something for which the entire Cathedral might once have been built.
A small lake, which served as the water source for the inhabitants of the Cathedral, lay about fifty meters below the surface. From the platform one could see the cavern itself, located another hundred meters deeper.
A tunnel carved into the rock stretched from the lake toward a watchtower. It was not merely a shaft — it was a gallery, an engineering work that seemed to belong not to human hands alone, but to a civilization that modern science prefers not to acknowledge.
He spoke calmly.
Too calmly for what he described.
And the more detailed his account became, the harder it was to hold onto a coherent picture.
The space he described did not assemble itself into a whole. It slipped away — as if the geometry of the cave refused to fit into ordinary perception.
Carved columns created the impression of a sacred structure governed by laws unknown to modern science. Every step echoed far ahead, as if the corridor itself were a vast resonant channel capable of transmitting sound over impossible distances.
But he never reached the exit or the spiral staircase.
About a kilometer in, he encountered a partially collapsed wall. Most likely a fragment of a military bunker constructed there deliberately, sealing access to the cave from the outside.
The wall was a complex, relatively modern structure unrelated to the Cathedral itself. Outside — monolithic concrete. Inside — a system of acoustic channels resembling a giant organ, not tuned for music, but for transmission.
Returning to the cave, it became clear that the central pillar did not reach the bottom.
It was suspended above it.
Supported only by a metal rod that functioned more as a guide than a load-bearing structure.
The hollow shaft of the column hovered above enormous quartz crystals rising from the depths like the teeth of a dragon breaking through stone.
Jürgen admitted that, suspended on a rope above that crystalline abyss, he had felt like a meaningless microchip accidentally placed inside a colossal sleeping mechanism — a mechanism whose true purpose lies far beyond human understanding.
When his headlamp beam swept across those colossal faces of crystal, the cave came alive. Light fractured through the mineral structure, scattering and returning as cold, ghostly shimmer, as if the crystals were pulsing in the dark.
Each crystal acted like a living instrument, capable of capturing the smallest vibrations. Together they resembled the pipes of a natural organ, each tuned to its own frequency.
I cannot vouch for the accuracy of the sketch I later drew in my notebook from Jürgen’s description. It is only an attempt to translate the impossible into physics.
After his story, what remained was not an image.
It was pressure.
A scale impossible to contain.
As if the Cathedral above were only a stone shell around something hidden deep within the mountain.
And the realization that sound there is not a result.
But a condition.
As for the sound we were searching for for the album “Inspirïert von Lena Liri” — one that does not oppose space, but accepts its laws — the Iron Cathedral did not give us answers. We merely saw, for the first time, one layer of a greater ancient structure.
But it gave us scale.
And that was enough to understand the weight we were dealing with — and the form this sound would no longer be allowed to break.
We no longer search for sound.
We build the form in which it can live.
After recording several sketches — fragments of cathedral acoustics that would later become part of the new album — we left Sanctum Ferrum.
The sun had already fallen below the horizon. Its last light faded from the sky, and above the mountains the moon slowly rose, casting a silver glow over the road.
Jürgen had gotten his share of adrenaline, but he was distant, lost in thought.
I did not ask him anything.
After places like that, questions are unnecessary.
And one thing was clear:
The old music could no longer be played.
(from the notes of Viktor Stahl)