Up close, the seam-causeway was wrong in a way that resisted scrutiny.
It wasn't broken, decayed, or unstable. If anything, it appeared older and more solid than any structure they had encountered on Floor 2. The pale stone was darker than the surrounding causeways, and the hum running through its rift-veins carried a lower, heavier resonance.
Yet the unease it inspired had nothing to do with engineering.
Looking at the structure for too long produced a strange cognitive resistance, as though the mind instinctively rejected its geometry. Every other construction on this floor followed the same warped logic of diagonal gravity and crystalline architecture.
This bridge did not.
Lysara approached the threshold with her staff extended, studying the seam where the two styles of stone met.
"This shouldn't exist here," she said quietly.
Her eyes followed the curve of the causeway.
"The terraces, the ziggurat, the bridges. All of them carry the hallmarks of Ecliptis design. The resonance patterns. The channel work. The way they draw power from the surrounding currents."
She shook her head.
"But not this."
"Why?" Kael asked.
"Because it doesn't behave the same way."
Lysara pointed along the pale arc.
"Ecliptis architecture works with the surrounding currents. It guides them. Shapes them." Her gaze narrowed. "This structure doesn't guide anything. It anchors."
The word lingered.
"It feels foreign. Like a layer that was forced into the maze rather than built alongside it."
Taryn crouched near the edge of the black stone, holding her hand above the pale masonry.
"It feels isolated," she murmured. "Not dangerous. Just... disconnected."
Her brow furrowed.
"Like it's been sealed away from everything else for a very long time."
Realization settled into place.
"That's what the Choir meant," Kael said.
Both women looked toward him.
"'Paths that cross were never one.'"
His eyes traced the seam.
"If the Vault overlaps two different realities, then this bridge is where those layers meet."
"We're not crossing a normal causeway anymore," Marcus said.
"We're crossing between structures that were never meant to exist together."
Marcus stepped forward.
"The riddle got us here."
His gaze remained fixed on the pale stone ahead.
"Now we find out why."
They crossed.
The change was immediate.
It didn't feel like stepping onto a bridge.
It felt like passing through a doorway.
The oppressive pull of Floor 2 vanished. Weight shifted strangely inside their bodies, leaving their inner ears scrambling for balance. Overhead, the fractured reflections and floating landmasses blurred into distant haze.
Even the hum of the rift-veins disappeared.
Silence took its place.
The farther they walked, the more the canyon opened around them.
The walls receded into darkness, revealing a chamber so vast its boundaries were impossible to judge.
And at its center stood something wholly unlike the ruins they had encountered so far.
A pristine structure.
It rose from the surrounding black stone with perfect symmetry. Pale blocks formed a broad platform that seemed almost luminous against the darkness.
Lines of light traced elegant geometric patterns across its surface.
Unlike the unstable veins elsewhere on the floor, these lines never flickered.
They simply shone.
Steady.
Unchanging.
As though time itself had failed to touch them.
"That is definitely not Spire architecture," Lysara whispered.
For once, her scholarly composure gave way to open wonder.
"Nothing I've ever studied resembles this."
"Then whose is it?" Taryn asked.
"I don't know."
Lysara took a slow step forward.
"But it feels intentional."
Almost reverent.
"As if it has been waiting."
They approached the platform together.
From a distance, the glowing patterns looked decorative.
Up close, they revealed deliberate structure.
Every line curved inward.
Every geometric pathway converged toward the center.
Toward a raised dais.
And at the center of that dais sat a single object.
Dark.
Perfectly still.
Its silhouette was small and angular, yet it cast a long shadow that seemed subtly wrong beneath the steady light.
"Another artifact?" Taryn asked.
Her voice echoed softly through the chamber.
"I don't know," Marcus said.
As he stared at the object, a familiar warmth stirred within his left palm.
Faint.
But unmistakable.
The silver sigil was reacting.
Marcus' eyes narrowed.
"I think we just found the next piece of the puzzle."