The ground changed without warning.
One step held firm. The next gave way beneath him, a thin crust stretched over empty space. His foot caught twice on the same uneven patch, the same ankle twisting both times. Each stumble pulled sharply at his side.
The pain forced him to shorten his stride for several steps before he could settle into motion again. He kept moving anyway. Stopping would only make the distance longer.
His captor and savior led without once looking back.
Beorn studied the sky instead. The west still held a narrow strip of orange light, but the east had already flattened into dull grey. Useful light was nearly gone.
Low scrub plants dragged long shadows over cracked earth. Rock formations broke the horizon at uneven intervals. Several leaned in ways that looked wrong.
Beorn tried to judge whether they had always stood that way or whether they had shifted recently and settled crooked.
He could not tell.
Which meant he could not predict whether any might fall.
A call came from the north. Guttural. The sound carried strangely, ending on a note that sat wrong in his ears.
Beorn searched through what little he knew of animals out here and found nothing useful.
She did not stop.
A second call answered the first, farther away and pitched differently. The two sounds formed a pattern. Some sort of communication. Territorial, perhaps. Hunting, perhaps.
Beorn lacked the context to know.
Without knowledge, the information was noise.
He focused on what he could control.
Walking.
"Faster, prince boyo."
The words drifted back toward him without her turning around.
Beorn looked at her profile. She was still scanning the terrain ahead. "I have a name."
"Do you."
"Beornwulf."
She walked another few strides before answering.
"Aestrith."
That was the entire exchange.
Neither of them added anything else.
The orange line in the west narrowed further, then vanished. Grey swallowed the sky. The cold followed fast once the light died, rising from the hardpan before the air itself had fully cooled.
A few stars appeared.
Then more.
Within minutes the last trace of daylight was gone.
The soundscape changed with the dark. The calls grew louder. More frequent.
Whatever made them moved more freely now.
Something shoved through brush to their left. Heavy enough that Beorn ruled out a single small animal. At the same time, the movement lacked the rhythm of an organized group. Whatever it was moved unevenly.
When Aestrith stopped, the movement stopped.
When they started again, it resumed.
Aestrith altered their course slightly, only a few degrees off their previous line. She gave no explanation.
Beorn considered the change. If the sound followed their original path, this new direction might slowly pull them clear of it.
He said nothing and followed.
Several minutes later the movement in the brush faded away. Whatever had been shadowing them either lost interest or lost their trail.
Beorn stayed close behind her.
The barrenland stretched pale and empty around them. The mineral smell sharpened as the temperature dropped, rising from the cracked ground as the day's heat bled away.
He could see better in the dark than the fading light had suggested he would.
The rock formations looked different at night. Every shadow threatened to become movement. Every jagged silhouette tried to turn itself into a figure.
He forced himself to check each shape carefully before reacting.
Aestrith found the mound without slowing. It rose slightly above the surrounding ground, a low swell of compressed earth with open terrain behind it to the north.
When Beorn stepped onto its base, the soil beneath his boots felt firmer than the loose crust they had crossed earlier.
She dropped the pack and studied the mound's face for a moment before turning toward him.
"Stand back."
Beorn obeyed immediately. Distance made sense. Whatever she intended probably required space.
Aestrith faced the mound and went still, arms loose at her sides.
The first sign was cracking.
Thin lines spread outward near her feet and raced across the mound's surface. They branched again and again, forming a widening arc.
At the same time the air before her hands thickened.
Beorn remembered the same distortion from the fight earlier. Space beyond her palms looked compressed somehow, as though the distance through it had shortened.
Then the mound moved.
Earth compressed inward and sideways at once. The surface drew tight against itself while the hollow formed within. As the interior deepened, the surrounding walls thickened under pressure.
A low grinding tremor passed through the ground.
Beorn felt it through the soles of his feet before he heard it.
The floor flattened beneath that pressure. Aestrith widened the hollow further and the earth around it compacted harder, reinforcing itself.
Now the strain showed.
Her footing shifted.
Her breathing changed.
Still she held on.
When she finally stopped, the hollow was large enough for two people to sit inside unseen from outside. The walls looked smooth and dense, noticeably harder than the surrounding earth.
Aestrith sat immediately with her back against the mound.
For a moment she stayed completely still.
The exhaustion showed in the way her shoulders sagged and in the simple fact that she had sat down at all instead of remaining ready to move.
Beorn carried the pack to the entrance.
The fire kit rested in the front pocket. The dried scrub she had gathered earlier lay bundled near the bottom. He crouched and assembled a small fire. Enough heat to blunt the cold. Enough light to see.
The scrub caught quickly, releasing a thin sharp smoke that lingered briefly against the compacted walls before the draft pulled it away.
Once the flame steadied, Beorn lifted the water skin toward her without turning fully around.
She took it.
Inside the hollow, the fire's warmth reflected off the dense walls and stayed trapped. Outside, the distant calls continued, though they sounded farther away now. The noises settled into a slow, uneasy rhythm.
Beorn sat near the entrance with his legs crossed and rolled a piece of root between his fingers.
"Is it the same?" he asked. "The creature earlier and what you did here."
Aestrith glanced sideways at him. The water skin rested loosely in her lap.
"No."
Beorn waited.
If there was a distinction, he wanted it explained, and he judged her curious enough not to refuse outright.
"The creature," she said slowly, "I pushed against what it already had."
She rotated the skin in her hands.
"The earth is different. I pushed with the pull already there."
Beorn considered that. "And supporting the hollow while the walls compacted. That's something else."
Her eyes lifted toward him more directly.
"Bold to pay this much attention to a Sinbound."
"Is it."
Silence stretched for a few moments before she gave a slight nod.
"Supporting is different. Easier than the hard push." She rubbed a thumb along the water skin. "Like shoring up a wall. Once the props are in place, it mostly holds itself. I just keep the props from slipping."
Beorn set the root aside.
"How long can you do it?"
"I'm not here to explain it to you."
"But you don't seem to mind talking."
Aestrith snorted softly and leaned her head back against the earth. "I'm bored."
"Then indulge my curiosity."
"When I'm pushing, the range opens up and the control gets worse. When I'm supporting something stable, the range shrinks but the control sharpens."
"Sharpens how?"
"I know exactly where the effect ends," she replied. "When I push hard, the force bleeds outward."
Beorn lowered his eyes to the fire.
He let the thought settle.
Several seconds passed before she spoke again.
"Why are you asking all this?"
"Curious."
Suspicion lingered in her stare.
Beorn kept his expression relaxed. If she searched for some deeper motive, she found nothing in his face to support it.
Eventually she turned away and lay down with her back toward the fire.
The word that surfaced from the broken remains of his previous life was gravity.
A lecture hall came with it for half a second. Rows of seats. Chalk dust in stale air. A voice without a face.
Gone before he could reach further into it.
Mass attracting mass.
Everything pulling on everything else without pause.
That force explained why objects stayed grounded instead of drifting apart.
The principle itself felt obvious.
The mathematics behind it did not.
Beorn recognized the pattern by now. Knowledge without structure. Fragments without the knowledge connecting them. He kept finding shapes with their interiors missing.
What Aestrith described sounded almost like a stabilized field.
Constant pressure.
Defined boundaries.
Something sustained without constant additional effort.
Reduced range, greater precision.
Another memory surfaced.
Molten iron cooling inside a mold.
Beorn followed the thought further. Metal formation. Crystal structures altered by pressure during cooling rather than cooling freely.
The distinction mattered.
He felt certain of that much.
But the full mechanism refused to surface. The direction was there. The final connecting piece was not.
The answer sat behind something in his mind that would not open.
He rolled carefully onto his good side and watched the fire burn lower.
The Badlands at full dark made sounds nothing in his experience had prepared him for.
Calls answered calls.
Something moved through brush far from the mound.
From the north came a low sound that fit no creature he knew.
Without context he could not read any of it.
He did not know enough.
That awareness sat heavy in him.
Beside the wall, Aestrith's breathing slowed into the steady rhythm of sleep.
Beorn closed his eyes.
The thoughts of iron and cooling continued anyway, turning over themselves without permission.
If a stable field surrounded molten metal while it cooled, the final casting would change.
How, exactly, stayed out of reach.
Sleep did not come quickly.
Far to the north, that low sound came again.
This time it did not repeat.
The silence afterward felt worse.