The mana sat in him like a belly full of mead before a raid — more than he needed, pressing at the edges of what he could hold, the kind of surplus that made men stupid if they didn't put it somewhere useful.
Ten deaths. Ten creatures, every one of them fed to his Varangur, and the harvest of it sat in him now waiting to be spent.
He should dig. The eighth room was half-formed, the bedrock waiting with its usual opinions about being rearranged, and the instincts were already composing demands. But his four warriors were bleeding in three different rooms and he had more power than he'd held since the moment he'd emptied himself at the commander, and the answer seemed obvious enough that he didn't think twice about it.
He pushed mana at Drevak first.
Drevak was sitting against the wall of the first room with his broken forearm across his chest and the back of his skull still seeping into his hair, and Gunnar pressed a thread of power toward him — here, stop bleeding, stop being broken — and the mana passed through him the way wind passed through a gap in a hull. Touching nothing. Fixing nothing.
Drevak blinked. "What was that."
"An experiment," Gunnar said. "Hold still."
He tried again, more of it this time, leaning into it the way he'd lean into a stubborn oar, and the mana drained out of him in a smooth, purposeless arc and accomplished precisely nothing. Drevak's forearm stayed broken. The cut on his skull bled at the same unhurried rate it had been bleeding since the worg put him into the wall.
Odin's eye. He'd pushed more mana at Drevak than it cost to carve two feet of tunnel through solid granite, and the result was a slightly warmer room.
He tried Varra next, on the theory that the problem might be distance — closer to the core, better delivery — and the mana moved through her as cleanly as it had moved through Drevak, which was to say it moved through her the same way sunlight moved through fog.
Varra looked at her hand, where the mana had briefly made the skin visible from the inside like a candle behind horn. "That was strange."
"It didn't work."
"No." She pressed her hand back to her ribs. "What were you attempting?"
"Healing."
A pause with a specific quality to it — the pause of someone who has just been told the thane tried to sail uphill. "Dungeons don't do that."
"I know that now."
"We heal on our own," she said, with the flat patience of someone explaining something she'd assumed was obvious. "Give us time. The binding mends what it can." She shifted her grip on her side and hissed once, short, controlled. "Faster for clean wounds."
Of course. Because he'd spent the last ten minutes pushing mana at his warriors like a man throwing water at a stone wall and expecting mortar, and meanwhile the binding had apparently been doing the actual work the whole time without telling him.
"How long," he said.
"Days. A week for the arm, maybe less." She tilted her head toward the passage — I have more to say and I'm deciding if it's worth saying — then didn't, which meant she'd decided it wasn't, and Gunnar moved on.
He tried Sket anyway, because Sket's calf was the worst of it and he was fifty-three years old and had learned to finish what he started even when the outcome was already clear, and the mana slid through Sket's ruined leg with the same cheerful disregard for his intentions that it had shown in both previous attempts.
Sket looked down at the leg, then up. "Nothing."
"Nothing," Gunnar agreed.
"Understood." Sket turned back to his tunnel entrance and resumed watching it, which was what Sket did with most information — received it, put it somewhere, kept working. Gunnar found this quality genuinely restful in a way he was still getting used to.
Brak hadn't been touched by anything — ten creatures through three rooms and not a mark on him, which said something about how hard the outer three had held — and when Gunnar tried the mana on him out of thoroughness, it did nothing, which had at least the virtue of being consistent.
"You're trying to heal us," Brak said. It wasn't a question.
"Badly."
"Varangur don't need it." Flat, informational, the tone of a man who considered each word a coin and spent them accordingly. "We mend. Slower than whatever you were attempting. Hurts more. Works."
"Good to know," Gunnar said.
Good to know. Thirty mana wasted, four warriors looked at, zero results, and the sum of it was: the binding handles its own. He filed it and turned back to the stone.
Bjorn, he thought, despite himself — Bjorn would have laughed himself hoarse watching that. Would have said something about Gunnar being the only man in two hundred who could find a way to miss with an axe when the axe was made of magic. Would have told the story for the rest of the winter, worse each time.
He pushed the thought down and dug.
The eighth room took four and a half days.
Eighty feet across, ceiling at sixteen, one seam of resistant granite in the eastern wall that refused clean work and had to be routed around, which added a day and produced an asymmetry that his dungeon-brain looked at for approximately three seconds before deciding it was a flanking advantage and moving on. The bedrock at this depth had started to run out of different opinions and was mostly submitting to him, which was the best he'd come to expect from stone that had been sitting undisturbed for a few hundred years and clearly felt he was being unreasonable.
The sixth Varangur arrived when the room settled.
She came into form already scanning — not the slow deliberate measure Varra had done on arrival, the experienced fighter cataloguing her ground, but something quicker and less organized, a scatter of attention that hit too many points at once and settled on none of them. Tallest of his crew by a hand's width, lean in the way of someone still growing into their height, tattoos sparse — few victories yet, the account of someone whose history was mostly ahead of her.
"I am Runa," she said, and dropped to one knee, then glanced up at the ceiling before she'd finished kneeling.
"Stand," Gunnar said. "Eighth room. Tunnel behind you is toward the surface. Tunnel ahead is toward me."
She stood and immediately walked the near tunnel entrance, pacing its width. Then walked back and paced the room. Then looked at the ceiling again.
"It's bigger than I expected."
"You're not the first to say that."
"The others said the rooms got larger. I'd assumed—" She stopped herself, apparently decided the arithmetic she'd done was too involved to bother explaining. "Where do you want me?"
"Center. You'll need the angles."
She moved to the center, planted her feet, checked both tunnel entrances, looked at the ceiling a third time. "High ceiling."
He went back to digging.
Back in his old life, when he'd had men bleeding on the ship after a bad raid, he'd known what to do. You put the worst ones flat, you packed the cuts with whatever the ship's cook had that wouldn't make it worse, you gave the ones who could still sit something to do with their hands so their heads didn't go strange places. You checked on them, not because checking changed anything, but because a jarl who didn't check wasn't a jarl — he was just a man with a bigger share of the silver.
He couldn't do any of that now.
He could feel his wounded warriors through the stone — the particular weight of Drevak sitting against the wall of the first room, still not pacing, which meant the forearm was bad enough that movement cost him something; Varra with her back against her room's far wall and the torch burning steady in the bracket; Sket standing watch in the third room like his leg was a detail he'd get to when he had time. They were doing what warriors did, which was continuing to function until they stopped, and there was nothing wrong with that, and he had absolutely no way to check on them beyond sensing their weight through the stone.
A crystal in a hole, Gunnar thought, with a cold bitterness that had nowhere to go. Valhalla waiting and instead I'm stone-deaf and stone-blind and stuck managing foreigners in a war I never agreed to fight. Odin All-Father, if you can hear me — if you're out there in whatever void separates your hall from this one — I want you to know I find this arrangement deeply, specifically insulting.
The bedrock had no opinion about Odin All-Father, which was probably accurate.
He kept digging.
The ninth room took five days.
Ninety feet across at its widest, ceiling at seventeen, a natural fissure in the northwestern face that he worked around rather than through and converted into an alcove — deep enough for a man to hold from, wide enough to move in, the floor leveled by an extra half-cycle of mana because footing was the one thing you could guarantee a fighter that terrain usually wouldn't. The warrior-mind had been contributing to the design without being asked since the fifth room, adding angles and chokepoints to what the dungeon-brain wanted to be plain boxes, and Gunnar had stopped arguing with either of them and started listening to whichever one made more sense at a given moment.
Thyrnax moved him again — three steps of void, awareness back in the stone on the other side with the click that bypassed thought entirely — and the ninth room settled around him smelling of cold rock and the particular stillness of deep earth, and Gunnar turned to the alcove and kept smoothing the floor.
The seventh Varangur arrived in the ninth room. Orvald. Weathered the way some men were weathered early — deep-set eyes, a deliberate economy of motion that looked like patience but was more like someone who'd stopped spending energy on things that didn't require it, which was a lesson Gunnar had taken until he was past thirty to learn. More tattoos than any of them save Thyrnax, the record of someone who had been at this for a while.
He looked at the room without speaking for long enough that Gunnar started to wonder if he was going to.
"Well," Orvald said, finally.
Gunnar waited.
"It's a good room." He walked to the alcove, put his back against the rear wall, checked the sightlines both ways. Then he walked out and took the center position and looked at both tunnels with the attention of a man doing arithmetic in his head. "Deep alcove. Anything coming through the tunnel doesn't see me until it's already committed."
"That's the idea."
"Good idea." He went back to the alcove and settled in, shoulders against the stone, arms crossed. "I'll hold here first. Pull them in before I move."
He stopped talking. Gunnar filed him: experienced, thought three steps ahead, had apparently decided everything he needed to know from one room pass. Orvald reminded him of Kjartan, who had never needed to be told anything twice and had saved Gunnar's life no fewer than three times without mentioning any of them. Kjartan was probably drinking in some hall right now, telling stories about Gunnar to men who'd never meet him.
Good, Gunnar thought. Good. Let him.
He moved on to the tenth room.
The tenth room.
He'd been feeling the pressure of it since the fifth — ten rooms, ten rooms, ten rooms — the dungeon-brain treating it as a threshold the way starving men treated the sight of a harbor, not excitement but the very specific relief of a thing that was supposed to happen finally within reach. The instincts had been useful in ways he hadn't expected and infuriating in ways he had, and ten rooms was where they'd promised, in the wordless way the dungeon-brain communicated, that they'd stop screaming long enough for him to think.
He gave the tenth room five days and didn't hold anything back.
A hundred feet across. Ceiling at eighteen. The bedrock here was the oldest stone he'd touched — denser and more settled than anything above it, the kind of stone that had been sitting in one configuration since before anything walked the surface overhead and had formed opinions about it, the way men who'd been in the same village their entire lives formed opinions about change. He asked it to become something else anyway, and it resisted, and he leaned into it cycle by cycle the way you worked a sail against a headwind — not fighting it directly, but using what pressure it gave back, letting the resistance tell him where the stone wanted to go and routing the room around its stubbornness until the stubbornness became a feature.
A natural column at the far end that the warrior-mind looked at and said: flanking point, leave it. He left it. A floor deliberately rough toward the entrance tunnel — not rough enough to catch his own Varangur, who would learn its pattern, but rough enough to break the stride of anything moving through fast and confident, the kind of ground that only punished the people who didn't know it was there. He spent an extra cycle on the column's base, widening it so a man could use the whole thing as cover rather than just peeking around the edge.
He built the tenth room the way he'd have designed a killing ground if he'd had two winters and no constraints. He built it the way he wished he'd been able to build every room before the instincts were done screaming at him.
This, he thought, carving the last rough section of floor. This is what all of them should have been.
The eighth Varangur arrived and called himself Keth, broad and quiet, and he looked at everything in the room twice before he said anything. His first words: "The column. You left it on purpose."
"Yes."
Keth nodded and took a position at the column's base — cover or pivot depending on what came through, exactly the use Gunnar had intended — and said nothing else, which meant he'd asked everything he needed to ask.
The ninth Varangur was Sigva, and she arrived with her chin up and her eyes already moving, and her first question was: "What's the floor roughness for?"
"Breaking stride."
"Mine too?"
"You'll learn it."
She walked the rough section twice, feet memorizing the pattern, then went to find her position. Same lean efficiency as Thyrnax. Didn't speak again. Gunnar took that as approval.
The tenth Varangur arrived when the room settled into claimed space and the last of the carving finished, and he was the youngest of them in the way that youngest showed in the Varangur — fewer tattoos, the ink sharper because it was newer, the record of a life still mostly unlived. He stood in the center of the room and looked at the column and the rough floor and the ceiling eighteen feet above and said his name, which was Fen, and then he said: "This room is serious."
"It is."
"Good." Fen rolled his neck until something cracked loud enough to register through the floor, then settled his weight with the readiness of someone who'd been waiting for an assignment and found the assignment worthy. "I like serious."
Ten.
He moved his awareness through the chain of them, surface to core, the order deliberate — the way a jarl arranged his line with green men at the flanks where the pressure came first and his best iron at the center where it had to hold.
Fen in the first room, at the entrance, youngest and least marked, the one who'd take the first hit and was supposed to take it and survive long enough for the next room to matter. Sigva in the second, quiet and efficient, the rough floor section memorized under her feet before she'd been in the room an hour. Keth in the third, broad and double-checking everything, the column his anchor point even though this room had none — he'd find something to use, men like Keth always did. Runa in the fourth, already rechecking the ceiling dimensions because she still hadn't gotten whatever answer she was looking for, and her restlessness would translate into something dangerous when something finally came through her tunnel. Orvald in the fifth, settled in his alcove with his arms crossed and the sightlines measured, a man who'd been in enough rooms like this to stop needing to think about it consciously.
Then the first five — the ones who'd already bled for him, who'd held against ten creatures and come out the other side knowing exactly what their rooms could do and what they couldn't.
Brak in the sixth, patient, unhurt, watching his tunnel with the particular stillness of a man who'd heard a war happen three rooms away and hadn't moved, which took more control than it looked. Sket in the seventh, the cauterized stripe on his calf less wrong than it had been, watching his tunnel like he'd been told to and hadn't been told to stop. Varra in the eighth, torch burning in its bracket, the worg's body still on the floor — Gunnar had left it there deliberately, because the next thing through that tunnel deserved to see what had happened to the thing before it. Drevak in the ninth, forearm knitting slow and steady in the way the binding mended things, already back on his feet and burning off the restless energy the only way available to him in a stone room with nothing yet to fight.
Thyrnax in the tenth, at Gunnar's back, where he had been since the first day.
Ten rooms. Ten warriors, ordered by what they'd proven, newest blood soaking the first pressure while the veterans held the deep ground, each one a harder door than the last, each one a fighter who knew their terrain because the terrain had been built around them.
The last stone settled, and the instinct that had been screaming since he'd opened his eyes in the dark — ten rooms before anything else, ten rooms, ten rooms — went quiet.
The silence it left was extraordinary.
He hadn't realized how much of himself had been occupied by that pressure until it released, and what came behind it wasn't relief — relief was for men who'd been afraid, and Gunnar Red-Axe had not been afraid — but it was close. The very specific feeling of a ship finally sitting right in the water. Hull sound. Weight balanced. Done.
And beneath it, cold and steady, something that had been waiting for the screaming to stop long enough to be heard:
Now. Now we do this right.
Ten rooms, and he could make every one of them into something that would cost the enemy a real price to walk through. No more plain boxes. No more bare tunnel. No more building the minimum because the dungeon-brain was busy screaming about thresholds and hadn't had attention for anything else. He had ten rooms of increasing size, a column, a fissure alcove, rough-cut floors, chokepoints he'd been not allowed to add because the instinct wanted structure before details — and now the structure was done, and the details were his, and by Hel's cold halls he was going to use every one of them.
They wanted a dungeon. They bound a jarl and told him to build a dungeon and guard a border in a war he'd never agreed to fight, in a world he'd never heard of, in a body made of stone, and what Gunnar Red-Axe intended to give them was a dungeon that would make the enemy regret every step of the descent.
Not because Valdros deserved it. Because he was the one building it, and the things he built, he built right, and what he built right, he built to win.
The tenth room settled around him, one hundred feet of claimed stone at eighteen feet of ceiling with a natural column and a rough floor and a serious young Varangur standing watch at the tunnel, and Gunnar let himself feel the full shape of what he had, and then he started planning what it was going to become.
When the sorcery popped up in front of him again with unfamiliar words. Tier 1 Achieved.