The Iron Cathedral. Episode 3: Frequency
Filter.
The time came when we needed a new sound for the future album “Inspirïert von Lena Liri”. Jürgen had been restless, unable to satisfy his hunger for height on a sheer wall, even though all the necessary gear was always with him. He rarely spoke about it, but I could see the pull in him — back to the place where stone breaks off into emptiness.
At some point it became clear: searching for sound in a studio was pointless.
We had to search where it lived.
And I suggested returning to the place where it first revealed itself — the Iron Cathedral on the Peak of Sorrow.
For Jürgen this meant one thing: a chance not only to record the best bass of his life, but to return to his beloved madness — free-solo climbing at impossible height.
This time we went as a full team. Clara was bursting with curiosity; she wanted to see this strange monument of forgotten engineering and feel its pulse.
The road was familiar: the route once again led through the military base, where permits and our cargo were already secured on army off-road vehicles. The air was still thick with the smell of burned diesel, frozen concrete, and gun oil. The duty officer glanced over our faces and lingered on Jürgen for a fraction of a second longer. A barely noticeable nod passed between them — a meaning that escaped me at the time. The clang of the checkpoint gates sounded like a familiar industrial sample, cutting us off from the regulated world and letting us into a territory where military rules gave way to entirely different forces.
The soldiers saluted us.
Perhaps they remembered us from last time. Or had heard our music.
I caught myself enjoying it.
As it turned out later — in vain.
The music had nothing to do with it.
We arrived quickly, without the strain of before — as if the place itself allowed us to return. Or decided it still needed us once more.
The Place That Holds Sound.
The light from outside vanished the moment we entered the Cathedral, as if cut off with a knife. Only a cold, diffuse twilight remained, in which the stone looked not gray but almost black.
We stopped and, for some reason, did not hurry forward. Wind wandered somewhere high beneath the trusses, but barely reached the floor. The space felt enormous and enclosed at once — as if it were waiting.
Hans set a case down on the granite. Metal rang softly.
“Quiet, ” Clara said suddenly.
We fell silent.
And then we heard the main thing.
Not the wind.
Not the echo.
The silence itself.
It was strange — dense, as if the space held it inside. I suddenly realized we were hearing this Cathedral for the first time without people, without wind, without machines. Just its own pause. A pause after which the first sound would seem too loud.
Before us rose a tall inner portal — a massive arch leading to the main nave. Not a facade, but a boundary within the fortress itself. The last threshold before the space revealed its full scale.
I raised my flashlight. At the zenith of the arch appeared an inscription — no ornament, no frame. Only deeply carved letters stretched along the curve:
EX FERRO — COR
Clara stopped behind me and held her breath.
“From iron… a heart, ” she whispered.
“Metallherz.”
Jürgen nodded briefly. We had come to the right place.
Sacred Engineering.
Beyond the portal arch, the space seemed to compress for a moment as we passed beneath a low overhead structure. The ceiling pressed down upon us, as though the Gothic cathedral were drawing us into itself. But after only a few steps, that sense of confinement vanished.
The vaults suddenly soared upward. The central nave opened before us in its full breadth—a Gothic grandeur impossible to grasp in a single glance.
Columns along the sides disappeared into the gloom, and only the beam of a flashlight revealed isolated fragments of stone. High above, the vaulted ceiling dissolved into darkness beneath the dome.
Behind us, above the entrance and just below the vaulting, a broad gallery with a semicircular projection at its center loomed in the shadows. By now it had almost slipped from view, left behind like part of a threshold crossed—a boundary between the outer world and the inner space of the Cathedral.
The architecture of the cathedral was not merely impressive—it was calculated. This was not a monument to faith, but an instrument. A lost artifact of sacred engineering, where form was governed not by symbolism, but by sound.
The calculations felt excessive, beyond any engineering school we knew. Not reliability — necessity. As if the slightest deviation would cause not structural failure, but something essential to break. A frightening thought emerged: the temple did not merely amplify sound. It held something that must never leave the limits of those calculations.
The temple breathed sound. Every vault, arch, and parabolic wall line was built with the mathematical precision of a musical score.
The Witch in Fire.
Hidden within a blind niche of the northern aisle was a fresco—one of the rare paintings applied directly to the rough granite surface. In this part of the cathedral, the sound of footsteps died away abruptly, as though the space itself were swallowing the echoes.
A crude medieval scene: a witch at the stake. Inquisition, pain, flames engulfing a woman with her head thrown back in a scream. Yet the flames were painted not as soft tongues but as sharp geometric bursts, lines layered again and again, as if the artist tried to capture movement inside the fire.
The image broke the logic of the resonator. Why place such a primitive execution scene here? It looked like alien code in a perfect program — a warning left for those who might someday understand the place.
Clara studied the stone woman for a long time.
“Strange fire, ” she murmured.
“In what way?”
“It feels… like it doesn’t burn.”
She never finished the sentence.
The Threshold.
Leaving the niche, we stepped into a low-frequency hum that struck like a physical blow. Our ears filled instantly; the air grew thick and vibrating again.
At the boundary between the two zones lay a bronze plate fused into the floor. When I stepped on it, a fine trembling passed through my boot. The metal greedily gathered vibrations like a massive ground.
An inscription was carved into it:
“Custodi me, Deus, a viis implicatis;
ab vanitate quae cor meum exaltat.
A furore caeco et ludo vano libera me,
et ostende mihi viam quae vere valet”.*
These words felt not like text, but action. Crossing the plate felt like shedding excess noise — everything random and superficial left behind at the edge of the silent flame.
(From the notes of Viktor Stahl)
* Note — translation of the Latin inscription:
“Protect me, O God, from deceitful paths; from vanity that exalts my heart.
Free me from blind fury and empty games, and show me the path that is true.”
* The song Dark Refuge / Metallherz — listen, read the lyrics and translation. Album “Inspirïert von Lena Liri” vol. 2. Valkyrie. (Prayer).
The song Tanz im Feuer / Metallherz — listen, read the lyrics and translation. Album “Inspirïert von Lena Liri” vol. 2. Valkyrie. (Witch).