The left branch descended gradually, the gradient gentle enough that the first thirty meters felt level before the body registered the accumution of downward steps and understood that it had been going down for longer than it realized. The air changed as they descended, cooler, the mineral light here a slightly different color, the deposits in this passage carrying more blue in them than the warmer tone of the passages above.

  Then the passage opened.

  Not into a cavern.

  Into something rger.

  The ceiling here was present but high, significantly higher than the passage that had delivered them, the space opening outward in all directions to produce a chamber that was less a room and more a condition, the kind of space that the dungeon generated occasionally in its deeper sections where the geology had produced something that exceeded the scale of its surroundings without expnation.

  The floor was soft.

  Not soft like soil. Soft like the floor had been covered in something that compressed slightly under weight, and when Aris looked down he saw what it was.

  Fur.

  Old fur, shed fur, the accumuted biological residue of many animals over a long period of time, compressed by time and moisture into a continuous yer that covered the chamber's floor from wall to wall. The smell of it was present and specific and not pleasant, the deep animal smell of a space that had been occupied continuously for long enough that the occupation had become part of the space's character.

  Colette had gone still beside him.

  He looked up from the floor.

  The walls of the chamber were not walls.

  They were warrens. The stone had been worked, not by tools, by teeth and cws over years, the surface riddled with openings from floor to ceiling, circur passages of varying sizes disappearing into the rock, some rge enough for a person to crawl through, most sized for something smaller. The openings were everywhere, covering every surface of the chamber with the specific density of something that had been added to over generations, each new opening pced where space was avaible, the overall effect being a wall that was more hole than stone.

  Aris stood at the chamber's entrance and looked at it.

  "This," Colette said, quietly and with great precision, "was absolutely not here before."

  The fur yer on the floor. The worked stone. The thousands of openings covering every surface. The scale of it, the time represented in the accumuted evidence of continuous occupation.

  "How," Aris said. "This would take—"

  "Years," Colette said. "At minimum." She looked at the openings in the walls. "The dungeon didn't have a White Rabbit nest of this size on Floor 7 during my training. Something this established would have been in the Lodge's records. It would have been a known hazard."

  "Maybe it was," Aris said. "And someone noted and filed it."

  Colette looked at him.

  Then she looked back at the chamber.

  The mineral deposits in here were brighter than the passage, or seemed brighter, the light reflecting off the fur yer on the floor and returning from the countless small circur openings in the walls in aggregate, each one contributing a fraction to the total until the chamber was better lit than anything they had passed through to reach it.

  Which meant the chamber was very well lit.

  Which meant they could see clearly.

  Which meant the red that was appearing in the openings, small and round and present in increasing numbers as the seconds passed, was clearly visible from the chamber's entrance.

  One pair.

  Three pairs.

  A dozen.

  The openings were filling. Not with movement yet, with presence, the specific stillness of things that have registered an intrusion and are assessing it before deciding what to do about it. The red eyes in the darkness of the warrens, each pair separated from the next by the stone between openings, produced an effect that was different from the three Rabbits in the cavern above.

  That had been a problem.

  This was a different category.

  Aris counted without meaning to count and stopped counting when the number became unhelpful.

  The fur yer on the floor rustled.

  Not from above. From below, the compression of it shifting as things moved beneath the surface, the nest's underground component expressing itself, the chamber's floor suddenly a less reliable surface than it had appeared.

  "Colette," Aris said.

  "I see them," she said.

  "All of them," he said.

  "All of them," she confirmed.

  The rustling increased. The red eyes in the wall openings began to move forward, the assessment phase concluding, the decision made, and from every opening on every surface of the chamber things began to emerge with the unified purpose of a popution that had not been disturbed in a very long time and had strong opinions about being disturbed now.

  The sound of them was the sound of a floor deciding to become something else.

  "Aris," Colette said, and her voice had the specific quality of someone who has already accepted the situation and is now purely focused on the next five seconds.

  He was already turning.

  Not running. Turning with his hand extended behind him, back toward the passage they'd come from, Void manifesting above him without the deliberate summoning he usually used, the Eido rising in response to the urgency the way it had risen in response to urgency before, the dark featureless form pressing above his skin with the mask face oriented toward the chamber wall to their left.

  Not the Rabbits.

  The wall.

  He found the fault in it.

  The dungeon's geology was active, Colette had said. Passages opened and closed on a long cycle. The wall to their left had a fault running through it, a structural weakness that the dungeon's own slow movement had been working on for years, the stone compressed and stressed along a line that ran from floor to ceiling in a shallow diagonal.

  Aris pulled.

  Gravity reached into the fault and found the compressed stress and pulled along the line of it, the direction of force exactly matching the direction the stone wanted to move and had been prevented from moving by the remaining structural integrity holding it together.

  The structural integrity stopped holding.

  The wall moved.

  Not explosively. The dungeon's stone didn't shatter or colpse, it slid, the fault opening along its length as the stressed material finally found the direction it had been looking for, the left wall of the passage entrance grinding forward across the chamber's entrance in a slow inexorable movement that produced a sound like the dungeon clearing its throat.

  The chamber entrance narrowed.

  Narrowed further.

  Aris held the pull, directed it, kept the force aligned with the fault's direction rather than letting it distribute outward, and the wall continued its movement across the entrance with the patience of geology given permission to do what it had been trying to do.

  The first Rabbits reached the entrance as the gap closed to a meter.

  To half a meter.

  The wall sealed.

  The sound of the chamber cut off on one side of the stone and Aris and Colette stood on the other side in the passage with the mineral light and the drip fading somewhere behind them and the sealed wall in front of them vibrating faintly with the impact of things that had reached it just after it stopped moving.

  Void settled.

  Aris lowered his hand.

  Colette looked at the sealed wall for a moment.

  Then she looked at him.

  "Quick thinking," she said.

  "The fault was there," he said. "The wall wanted to move."

  "Still," she said.

  He nodded once. He was breathing harder than the physical exertion warranted, the specific respiration of someone whose body had processed the st thirty seconds on a dey and was catching up now.

  He looked at the sealed wall.

  He had seen something in the chamber in the moment before the stone completed its movement, in the st half meter of the gap, the light from the chamber coming through the narrowing space and illuminating something on the far wall that the Rabbits and the warrens and the fur yer and the red eyes had made it very easy not to see.

  On the far wall of the chamber, above the highest warren openings, where the stone was unworked and original, something had been pressed into the rock.

  The same geometry as Elysse's sigil.

  Larger. Much rger. The size of the wall itself, the pattern covering the stone from the chamber's height down to where the warrens began, not pced there recently, not pced there in the st eighteen months. Old. The pressed geometry of something that had been on that wall long enough that the dungeon had grown around it, the warrens worked into the stone below it over years by creatures that nested beneath it without understanding what was above them.

  The wall sealed.

  The image disappeared behind stone.

  Aris stood in the passage.

  "Aris," Colette said. Her voice had the careful quality of someone who had noticed that the person beside them had gone somewhere in their head and was waiting for them to come back.

  "I saw something," he said. "Before the wall closed."

  She waited.

  "I don't want to talk about it," he said.

  She looked at him for a moment with the grey eyes doing their reading, the assessment moving across his face and finding whatever it found and arriving at a conclusion she kept to herself.

  "Alright," she said.

  She looked at the passage behind them, the way back toward the junction, the right branch that hadn't been there before.

  "There's another route to Floor 8," she said. "Through the right branch at the junction. It's longer but it avoids this section entirely."

  "Good," Aris said.

  "Whatever you saw," she said, already moving back up the passage toward the junction, not looking at him, giving him the space that the not looking provided. "I hope we don't have to deal with it."

  "So do I," Aris said.

  He took one more look at the sealed wall.

  Then he followed her.

  The right branch was narrower.

  Single file narrow, the walls close enough that Aris's shoulders brushed stone on both sides if he didn't angle himself slightly, the ceiling dropping two meters in and staying dropped. The mineral deposits here were infrequent, small, the light they produced barely reaching the next one before running out.

  Colette went first. He followed.

  They moved without talking, the silence between them the functional kind, both of them listening to the passage rather than each other. Their footsteps were the loudest thing for the first few minutes and then they weren't.

  The sound started to their left.

  Movement. Not one thing, many things, the aggregate rustle and impact of a rge number of bodies navigating stone passages at speed. It ran parallel to them through the wall, tracking their pace, and it did not slow and it did not stop and it did not get further away.

  Aris looked at the left wall.

  The left wall looked back at him with the indifference of stone that was not obligated to share what was behind it.

  "Rabbits," Colette said quietly, not slowing.

  "The ones we sealed in," Aris said.

  "The warrens connect," she said. "The whole floor is networked. They're following us through the rock."

  "Can they get through."

  "If there's an opening ahead," she said. "Yes."

  They walked faster.

  The sound kept pace.