The mountains did not announce themselves.
They simply appeared.
One moment the road was moving through low hills and scattered farmland, frost still clinging to the north-facing slopes where the morning sun hadn't reached yet. Then the land lifted, the tree lines thickened, and the hills became something more deliberate — ridges with edges, valleys with depth, the kind of terrain that had been shaped by pressure over so long that it no longer remembered being anything else.
Thor rode the motorcycle with both hands loose on the bars and his eyes moving constantly across the slopes.
Sif rode beside him.
The venom case and Idunn's wrapped apples were secured in the saddlebags. Neither of them had spoken much on the road north from Sanctuary. The apples carried their own kind of weight, and they had both felt it from the moment Idunn pressed them into Thor's hands.
Not urgency.
Necessity.
The kind that didn't need to be discussed.
They came off the main road onto a forest track that wound upward through hemlock and pine, the bikes slowing to a careful crawl on ground that was half frozen mud and half exposed root. The trees closed in overhead, their canopy turning the pale winter sky into broken patches visible only through gaps in the branches.
The air changed.
Colder.
Wetter.
Dense with the smell of pine resin, old leaf mold, and something beneath both — a mineral undertone that came from deep rock and deep time.
Thor exhaled slowly.
"God's country," he said quietly.
Sif glanced at him.
"You've heard that phrase?"
"I read."
"Since when?"
"Since Saul started leaving books in the operations building."
Sif almost smiled.
"And?"
"And some of them were about this region."
He looked up through the trees.
"Potter County. The locals called it God's country before the Shroud. Before people called anything anything, probably."
Sif followed his gaze.
The forest here had a quality she recognized — not from this life, not from any memory she had consciously recovered, but from something older. A density of presence. The sense of being watched not with hostility but with the patient attention of something that had been here long enough to have stopped being surprised by visitors and had simply started cataloguing them.
She had felt it in Norway.
In certain Swedish forests.
In the Black Hills.
The land that remembered itself.
"He'll be close," she said.
Thor nodded.
They cut the engines.
The silence that followed was not empty.
It breathed.
⸻
Ullr stepped out from between two hemlocks as if he had been standing there since they had left Sanctuary and had simply waited for them to arrive at the correct time.
He looked exactly as he had when they had last seen him — same coat, same bow, same economy of motion that made every other person in a landscape look slightly wasteful by comparison.
He studied the saddlebags first.
Then them.
"You made it," he said.
"Did you think we wouldn't?" Thor asked.
"No," Ullr said. "But I thought you might take longer."
Thor opened his mouth.
Sif put a hand on his arm.
"We brought what you need," she said.
She reached into the saddlebag and brought out the cloth-wrapped apples first.
Ullr looked at them.
For a moment something moved across his face — not emotion exactly, but the recognition of something whose absence he had been carrying without naming.
He took them carefully.
Held them.
Set them in his pack with the deliberate reverence of a man handling something that mattered more than he intended to let anyone see.
Thor handed him the venom case next.
Ullr opened it, examined the contents methodically, closed it, and added it to his pack beside the apples.
"Good," he said.
That was all.
They started walking.
⸻
The trail Ullr chose did not follow any logic Thor could immediately identify.
It moved through the forest in angles that seemed arbitrary until he realized each turn avoided something — a soft section of ground, a sight line from above, a gap in the canopy that would have outlined them against the sky.
He was routing them the way a hunter routed a stalk.
Like the mountains themselves were prey he did not want to alarm.
"Have you seen them yet?" Sif asked.
She meant the mutants.
"Signs," Ullr said. "Not contact."
"Where?"
"The plateau." He gestured south and slightly east without breaking stride. "Potter County. Near the headwaters."
Thor looked up.
"The headwaters of what?"
Ullr glanced back.
"The Genesee."
That word sat between all three of them for a moment.
Thor understood it immediately.
"The same river," he said.
"Yes."
"The one that runs through Rochester. Through Mt. Morris. Through Letchworth."
"Yes."
Thor was quiet for a beat.
"So if they reach the headwaters—"
"They reach the entire watershed from the source," Ullr said.
He kept walking.
"Which is why we are going there."
⸻
They moved fast for the next hour.
The terrain was everything the name suggested — a dissected plateau, the locals had always called it, meaning the land had been carved by water into a system of steep-walled valleys and narrow ridges that looked flat on a map and were anything but underfoot. Hemlock canyons dropped away on either side of the ridge paths, their walls so dense with green that the light inside them turned the color of deep water.
Thor called it the chlorophyll canyon under his breath, which made Sif glance at him again.
"You really have been reading."
"It's a good word."
She shook her head.
Ullr stopped on a ridge.
Below them a valley opened, narrow and wooded, a thin thread of water visible at its bottom where a stream caught what little light reached the floor.
"That's the beginning," Ullr said.
Thor frowned.
"Of what?"
"The Genesee."
Thor stared down at the thin trickle of water.
"That."
"Yes."
"That is the same river that—"
"Yes."
"That's barely—"
"You could step across it," Ullr said. "Without getting your ankles wet."
Thor looked at the tiny stream.
Then north, toward where the river would become the thing he had stood beside at Rochester.
"That's the most important stream I've ever ignored," he said.
Ullr's mouth twitched slightly.
"Most people do."
He turned and looked southeast toward a higher ridge.
"The headwaters sit at a triple divide. Rain falling in three different places on that hill ends up in three different oceans."
Sif studied the terrain.
"Gulf of Mexico. Chesapeake. North Atlantic?"
Ullr nodded.
"The Allegheny carries one path south. The Susquehanna carries another east. The Genesee carries the third north to Lake Ontario."
He looked at the ridge.
"Every drop that falls there goes somewhere different."
Thor was quiet for a moment.
"And if the mutants find the headwaters—"
"They don't need to follow the Genesee north," Ullr said. "They follow the Allegheny south into Pennsylvania. The Susquehanna east into Maryland. Three watersheds. Three directions. All from one place."
The weight of that settled over all of them.
Sif said quietly, "Saul needs to know this."
"Yes," Ullr agreed. "He does."
He started walking again.
"Which is why we move fast."
⸻
They had been walking twenty minutes on the new route when Ullr stopped.
Not dramatically.
He simply stopped moving, and his hand came up — not raised, not pointed, just lifted slightly at the side, the smallest possible signal that meant don't.
Thor saw it and froze.
Sif was already still.
Then Thor saw it.
Ahead in the trees.
A shape.
Tall.
Thin.
Standing between two hemlocks at an angle that suggested it was watching them.
It looked like a deer.
It was not a deer.
Thor's hand moved toward Mjölnir.
Ullr's hand came down on his wrist.
Firm.
Not urgent.
Certain.
Thor looked at him.
Ullr shook his head once.
They stood completely still.
The shape between the hemlocks did not move.
Its head was turned toward them — and that was the first thing wrong. A deer's eyes sat on the sides of its skull, scanning wide. These eyes faced forward. Human forward. Predator forward.
Its legs were wrong too.
Not broken-wrong. Not injured-wrong.
Just — wrong.
The joints did not bend the way any animal Thor had known bent. They bent at angles that the eye kept trying to correct for, kept trying to reinterpret as distance or shadow, and could not.
It stood very still in a stillness that did not feel like prey stillness.
It felt like something else entirely.
Something that knew it was being looked at and was deciding what to do about it.
Thor kept his hand near Mjölnir.
Ullr kept his hand on Thor's wrist.
For thirty seconds nothing moved in the forest.
Then the shape turned — not the way animals turned, not the smooth pivot of muscle over bone, but in a motion that suggested it had more neck than any creature had any business having — and walked sideways into the shadows between the trees without making a sound.
Gone.
The forest resumed breathing.
Thor exhaled.
Ullr released his wrist.
"What," Thor said.
"Not deer," Ullr said.
"I noticed."
"No," Ullr said. "That is its name. Not Deer."
He started walking again as if they had simply paused to check a map.
Thor looked at the space between the hemlocks where the thing had stood.
Then he followed.
⸻
"There are several explanations," Ullr said, keeping his voice low and his pace steady.
He moved through the forest the way he always moved — as if the ground had agreed ahead of time to hold him quietly.
"Some people say it is an old spirit. Pre-human. Something that existed before the Norse came, before the Haudenosaunee came, before anyone came and named things."
"What kind of spirit?" Sif asked.
"The kind that has been forgotten long enough to become angry about it."
He stepped over a root without looking down.
"Or not angry. Just — present in the way things are present when they have been ignored too long. The way a rafter is present when the house starts to fail."
Thor glanced back toward the hemlocks.
"It had human eyes."
"Forward-facing eyes," Ullr said. "Yes. That is the mark of it. Along with the joints."
"Why joints?"
Ullr shrugged slightly.
"Some things bend at the wrong angle when they have been shaped by the wrong kind of attention. When people look at something with fear long enough, the thing becomes what the fear made it."
Sif considered that.
"The Haudenosaunee have their own version," she said.
Ullr nodded.
"The Deer Woman."
"You know it?"
"I have been in these mountains for months," he said. "You learn what lives in a place."
He paused at a stream crossing and chose his stones carefully before continuing.
"The Deer Woman appears as a woman. Beautiful. She is drawn to men who have harmed women or children."
Sif glanced at Thor.
"Sounds like you should be worried."
Thor frowned.
"I have not—"
"You lifted a roof off a tavern."
"That was—"
"And threw a man through a wall in Normandy."
"He deserved it."
"He was a cook."
"He was a bad cook."
Ullr almost smiled.
He kept walking.
"If you see a woman at the forest edge," he said, "check her feet."
Thor stared at him.
"Hooves," Ullr added.
"Yes, I understood the reference," Thor said.
"Good."
"I am not going to be lured to my death by a forest spirit."
"No," Ullr agreed. "You would trip over her hooves before she got you anywhere near a cliff."
Sif laughed.
It was brief and genuine and the sound of it moved through the hemlocks and disappeared.
Thor muttered something under his breath that was not for general hearing.
⸻
They moved deeper into the plateau country.
The terrain became stranger.
Not hostile.
Just layered.
The kind of landscape that held things.
Ullr pointed out a section of forest where the ground had been disturbed — not by hooves, not by boots, but by something with more weight than a deer and less grace.
"Ghost deer," he said. "White deer. This region has always had them."
Thor looked at the disturbed ground.
"Spirit or biological?"
"Both," Ullr said. "The biological fact became the spiritual fact. White deer were always rare enough to be remarkable. Remarkable enough to become significant. Significant enough to become—"
"Sacred," Sif said.
"Yes."
He gestured toward a ridge to the east.
"The Nondescript is also here."
Thor looked at him.
"The what?"
"Locally named in the last century. Six feet tall. Covered in hair. Walks upright. Tusks."
Thor was quiet for a moment.
"That sounds like something specific."
"It is something specific," Ullr agreed. "What, exactly, is still being argued."
He pointed to a section of old forest where the trees were thicker and the light was thinner.
"King Arthur is also here, supposedly."
Sif blinked.
"What?"
"Local legend. Wounded in battle, came to the healing springs in these mountains. Buried under the stream." He glanced at her. "Ten feet down in a stone coffin. A stream diverted over the grave."
Sif stared at the forest.
"That cannot be true."
"It is local legend," Ullr said. "Whether it is true is a different question."
Thor looked at the old trees.
"Are there healing springs?"
"Yes."
"Do they work?"
Ullr paused for a half step.
"The water is cold and clean and tastes like mineral and distance," he said. "Whether that is healing depends on what you bring to it."
They walked in silence for a moment.
"You have been busy up here," Sif said.
"The mountains teach," Ullr said. "If you move through them quietly enough."
He stopped on a high point and looked south.
The plateau spread before them in long ridges and green valleys, the hemlocks thick, the sky vast and clear above.
"This place matters," he said. "Not just for the watershed. For what it holds." He turned to look at them. "If the mutants establish themselves here — if they reach the headwaters and the three drainage systems — they do not need the Genesee north anymore. They go south into Pennsylvania. East into Maryland. They reach the Chesapeake. They reach the Ohio valley from the other side."
Sif understood.
"They bypass the defensive line entirely."
"Yes."
Thor looked south.
"How far are the signs you saw?"
Ullr's expression had already changed.
Not alarmed.
Alert.
"Close," he said.
Then he crouched.
He pressed two fingers to the ground.
Stayed there for three seconds.
Stood.
"Closer than I thought."
⸻
The tracks were not difficult to find once Ullr was looking for them.
He moved along the forest floor in a low, fast scan, his eyes covering ground the way a hand covers a surface feeling for imperfections.
Thor stayed back.
He had learned in the last hour that Ullr's version of tracking was something to observe, not to assist.
Sif crouched beside him as he found the first print.
"Bare," she said.
"Yes." Ullr studied the depression. "Recently turned. You can still see the shoe tread on the heel — someone who was wearing boots when they changed."
He moved laterally.
Found another.
"This one older." He pointed to the toes. "The webbing is starting."
Thor leaned in despite himself.
The toeprints were spread wrong. Not the play of a running foot. The individual marks were beginning to merge at the edges, the skin between them pressing outward.
"Stage three," Sif said quietly.
Ullr glanced at her.
"You know the stages?"
"Kvasir is working on them. We read what he had before we left."
Ullr nodded slowly.
"Then you understand what the dorsal ridge means."
"Yes."
He moved again.
More tracks.
Then more.
The trail widened as he followed it south, the individual prints multiplying until the forest floor showed a broad corridor of disturbed ground.
"Twenty," Ullr said.
He kept moving.
"Twenty-five."
He stopped.
Looked south.
Then east.
"Settlement," he said.
Not a question.
He started running.
⸻
They heard it before they saw it.
Not screaming.
Impact sounds.
Wood splintering.
A rifle shot.
Then another.
Then voices — sharp, controlled, the voices of people who were frightened but functioning.
The settlement came into view through the tree line: a cluster of farmhouses and barns arranged in a rough defensive circle, a timber barricade linking them at the corners, smoke rising from two chimneys. Small. Maybe thirty people if you counted everyone.
They had barricaded well.
But not well enough for twenty-five.
Mutants moved against the south and east walls simultaneously. Not a flood. A systematic press — testing the barricade at multiple points, pulling back when they met resistance, probing the next section.
Thor's hand went to Mjölnir.
Sif's hand went to her sword.
Ullr already had an arrow nocked.
He looked at both of them.
"No lightning," he said.
Thor looked at him.
"No lightning, no skyfire, nothing they will talk about for twenty years."
Sif pointed at Thor with one finger.
"You heard him."
Thor exhaled.
"I heard him."
"Say it."
"No lightning."
"Say it like you mean it."
"No—" Thor stopped. "Why are you—"
"Because the last time you said you would be subtle you put a crater in a parking structure."
"That was—"
"Thor."
"Fine. No lightning. Hammer as a hammer. I understand."
Sif looked at Ullr.
"He understands."
Ullr was already moving.
⸻
Ullr hit the east side of the settlement first.
He came out of the tree line at a dead run and did not slow down.
His bow was up before the first mutant registered his presence.
Three shots.
Three drops.
No wasted motion between them — the draw, the release, the next nock, the draw, the release, all one continuous motion that looked less like archery and more like the forest expressing an opinion about what should and should not be moving through it.
The mutants on the east wall turned.
He was already moving laterally.
Two more shots.
Two more drops.
He never stopped moving.
Thor came in from the south with Mjölnir held like what it was — a hammer. Not swung for lightning. Brought down with controlled force that snapped bones and drove bodies backward without ceremony.
He was quiet about it.
That was the strangest thing to the settlement defenders who watched from behind the barricade.
The large young man who hit things with a hammer was quiet about it.
No roar.
No announcement.
Just — work.
He cleared the south approach in ninety seconds with the focused efficiency of someone doing a job they had done many times in many forms and had stopped finding dramatic.
Sif moved through the gap between south and east, her broadsword up.
She used it like a broadsword.
A very large, very fast broadsword swung by someone who moved like water and hit like stone. No spatial seams. No redirected bullets. Nothing that required explanation.
Just the sword.
A mutant lunged toward a defender on the wall and Sif stepped in front of it, turned the lunge aside with the flat of the blade, and drove the pommel through its jaw in a downward strike that ended the conversation.
She reset.
Found the next one.
A smaller mutant tried to climb the barricade from the east side.
Ullr dropped it before it cleared the top.
He had not stopped moving the entire time.
The settlement defenders had started firing again — steadier now, more controlled — because the three people who had come out of the forest had not panicked and the watching of that had reminded them not to either.
Within four minutes the pressure had broken.
Not all of them dead.
Several had retreated into the tree line to the south.
Thor watched them go.
His hand tightened on Mjölnir.
He did not follow.
He had promised.
He exhaled.
Sif walked up beside him.
"Good," she said.
"I know," he said.
"I wasn't expecting good. I was expecting you to follow them."
Thor looked at her.
"I follow instructions."
"Since when?"
He opened his mouth.
Closed it.
"Since Shane," he said finally.
Sif was quiet for a moment.
"Yes," she said.
"Since Shane."
⸻
The settlement gate opened cautiously.
A man came out first — late forties, rifle in both hands, eyes moving between the three people standing in his yard and the tree line beyond them.
He had the look of someone who had prepared for this and was still surprised it had actually happened.
"You came from the forest," he said.
"Yes," Sif said.
"There were three of you."
"Yes."
He looked at Thor.
At the hammer.
At Sif's broadsword.
At the empty space where Ullr had been standing — because Ullr had already retreated to the edge of the yard and stood near the tree line where the shadow was thicker and the people were thinner.
"Are you—" the man started.
"We were passing through," Sif said. "We saw the tracks."
The man absorbed that.
"Thank you," he said.
A woman came out of the gate behind him.
Then two more people.
Then a teenager who stared at the bodies outside the barricade and said nothing.
A few of them looked toward Ullr.
He did not step forward.
He never did.
Thor accepted the thanks on his behalf without mentioning him by name.
The settlement leader — his name was Garrett, which he gave without being asked, in the way people gave names when they wanted to establish that they were a person and not just a collection of fears — looked at the tree line again.
"They've been pushing from the south for three days," he said. "Small groups. Never this many."
Sif looked at him.
"Three days."
"Yes."
"Coming from which direction."
Garrett pointed south.
"We sent scouts two days ago. They saw a larger group moving north." He paused. "Much larger."
Sif glanced at Thor.
Thor looked south.
Garrett continued.
"The scouts said it looked like they were pushing everything ahead of them. Like they were — driving things north before they moved."
"Driving what north?" Thor asked.
Garrett shook his head.
"Whatever was in the way. Animals. Smaller groups of those things." He gestured toward the bodies. "Like they were clearing a path."
Ullr stepped forward then.
Not fully into the yard.
But forward enough to be heard.
"How large," he said.
Garrett looked at him.
"The scouts said—" He stopped. "They said it looked like a river."
The word landed on all three of them.
Not like water.
Like the river.
The Genesee.
The watershed.
The triple divide twenty minutes south of here.
Sif turned immediately.
"We need to move."
Thor was already moving.
Ullr passed both of them without a word, heading south at the ground-covering run that made the forest look like it was cooperating with him.
Sif called back to Garrett without slowing.
"Stay behind your walls. Send riders north. Tell everyone the source is being threatened."
Garrett raised his hand.
She was already gone.
⸻
They ran south through the hemlocks.
The forest moved around Ullr the way it always moved around him — quietly, as if it had agreed to make space.
Thor ran beside Sif, the hammer loose in his hand.
The trees thinned as the ridge dropped toward the plateau edge.
Below them the first thin thread of the Genesee caught light in the valley.
Still small.
Still barely more than a seep, a spring, a place where the water remembered which direction it was supposed to go.
Ullr stopped at the ridge.
He looked south.
Then east.
Then south again.
"Freyr," he said.
"Five hours south," Sif said.
"Less if he already knows."
Thor looked at him.
"Does he?"
Ullr was quiet.
"The land tells him things," he said. "If something large moved through his territory—"
He paused.
"He knows."
Sif studied the valley below them.
The water.
The source.
The place where three rivers began.
"We can't let them reach this," she said.
"No," Ullr agreed.
Thor looked south toward where the larger movement had been reported.
"Then we don't let them."
Ullr glanced at him.
"No lightning," Thor said, before anyone could say it.
Ullr turned back toward the south.
"Not yet," he said.
Then he started running again.
And the mountains moved quietly around all three of them as they went.