The Double-Edged Labyrinth Built by The Emperor Left the Adeptus Custodes Craving Death's Release

The Adeptus Custodes and the Raven Guard passed through the treasury gates, followed by servitors pushing wheeled transports.

"We must preserve any technology we find."

The gates closed, and Corvas Corax took the lead, striding to the deepest part of the hall.

Amid dazzling red light, three great doors rumbled open, revealing an elevator.

It could hold thirty or forty ordinary people, or a squad of Astartes.

"Lord Corax, we must descend with you." Arcatus led several Adeptus Custodes straight into the elevator.

They would never allow the primarch to leave their sight.

Thud!

With a muffled impact, Corax stepped out of the elevator and looked at the countless corridors before him, recalling the memories that had come from his father.

His father had personally overseen the construction of this place and named it the Double-Edged Labyrinth.

After his father's last visit here, he had activated it.

The elevator rose and fell constantly, bringing batch after batch of Raven Guard, but Corax still gave no order to explore.

No matter which corridor they first entered, they would be carried away from the central sealed chamber through a network of randomly shifting passages and bridges.

The automated defense systems inside the passages were dangerous and lethal, even to the Raven Guard.

This was the trial his father had given him.

Corax's brow furrowed tightly as he pieced together the construction process in his mind.

Tunnels were dug, bridges erected, vast engines buried among the rock, and energy conduits connected those engines to detectors beneath the glacier, while pneumatic devices and gears drove the entire machine.

He knew that the detachable cranes capable of shifting inside the mechanism, and the constantly rotating giant turntables, were all controlled by the random melting of glaciers on the far side of the mountain.

That meant