They had been climbing for three hours when the trail changed.
Below the shelf it had been honest ground — slate, weathered granite, the kind of rock that gave you nothing to read and nothing to fear. Above it, the rock gave way to older stuff. Shale, close-packed. Loose underfoot in places. The kind of surface that shifted when you weren't expecting it to.
Vane had stopped checking the ledger an hour ago. There was nothing to log yet. Just the route, and the three of them on it, and the light getting thinner as the ridge rose into cloud.
Brandt walked second, chain still spooled under his arm. He hadn't said much since they left the shelf. Vale walked last, hands in his pockets, watching the edges of the trail.
---
The first blaze came up about four hundred yards past the tree line.
It was cut into a slab of shale at shoulder height. Two strokes, hand-made. The edges had gone soft with weather, the stone around them stained dark with age.
Vane stopped and ran his thumb across it.
"Old," he said.
"How old?" Brandt asked.
"Decades. At least." He traced the edge of the upper stroke. "No one's recut this."
He marked it in the ledger. Date, elevation, condition. Hand-cut blaze, unmaintained, approximate age: several decades.
They kept going.
The second blaze was a hundred yards further, and it was identical. Two strokes. Same height. Same hand.
Vane marked it too.
---
The trail kept climbing.
It wasn't a bad route. That was the thing Vane kept noticing. Somebody had cut these blazes for a reason. The path was laid out properly — switchbacks where the slope steepened, straight lines where it didn't. It wasn't a wildlife trail. It was survey work.
Brandt stopped once to check the light. He didn't say anything, but Vane saw him do it.
"What time is it?" Vane asked.
"Past fourth bell."
Vane looked up at the cloud line, then back at the trail.
"Twenty minutes," he said. "Then we turn around."
Brandt nodded. He didn't say anything else.
---
Vale spoke for the first time in an hour.
"The marks are still there."
Vane turned. "What marks?"
"The ones from the shelf. The three-toed ones." Vale was crouched at the edge of the trail, looking down. "They're still going up."
Vane walked back. He crouched beside him.
Vale was right. The small three-toed prints were faint, but they were there. Pressed into the shale where the surface was soft enough to hold them. Same direction. Same spacing. Same pace.
"The hound prints stopped at the shelf," Vale said. "These didn't."
Vane looked back down the trail. Then up, toward the cloud line.
"They went up," he said.
"Yes."
"And we don't know what they are."
"No."
Vane stood. He didn't write it down yet. He would later. Right now he just wanted to see where they went.
---
They climbed for another fifteen minutes.
The terrain got worse. The shale turned into loose scree in places, and twice Brandt had to anchor the chain so they could cross sections where the footing failed. The blazes kept appearing, spaced evenly, cut by the same hand. Whoever had made this route had known what they were doing.
The cloud came down gradually. Not fog, exactly. Just a low grey layer that made the ridge above them disappear and the trail behind them look shorter than it was. The light was getting thin.
Brandt stopped again.
"Vane."
"What?"
"Five minutes."
Vane checked his own sense of the route. Brandt was right. Whatever this route was, it was longer than the corps records suggested. The old surveys up this ridge had logged the route as roughly two miles from the shelf to the top. They'd been walking closer to three.
"Five more," Vane said.
He kept walking. Brandt followed.
---
They found the third blaze two minutes later.
It was different from the others. Not just two strokes. There was a number cut below them. Small, weathered, but legible.
E-42.
Vane stared at it for a moment.
Not E-17. Not the Eastern Spur. A different marker, on a different ridge, cut by a different hand at a different time. But it was the same system. Same format. Same numbering.
He pulled out the ledger and wrote it down.
Brandt came up beside him. "What is it?"
"Old survey marker. Same system as the eastern routes."
"Same as E-17?"
Vane didn't answer right away. He was looking at the marker, then at the route above it, then at the light.
"Same system," he said. "Different ridge."
He closed the ledger.
"Two more minutes."
---
They reached the top of the route one minute later.
Not the top of the ridge. The top of the route. The trail ended at a small plateau, half-swallowed in cloud, where the blazes stopped and the path simply ceased to exist.
There was nothing there.
No shelter. No equipment cache. No structure. Just flat ground, a few old stones that might once have been a cairn, and the cloud.
Vane stood at the edge of the plateau and looked around. Brandt was already checking the ground. Vale walked the perimeter with his hands still in his pockets.
Nobody said anything for a moment.
"There's nothing here," Brandt said.
"I know."
"So why cut a route to it?"
Vane didn't answer.
---
He walked the plateau once. He checked the stones. He checked the edges. He looked for anything that would explain what the route had been built for.
There was nothing.
He was about to give the order to head back down when he noticed the path.
Not the route. The path. The trail they'd walked up.
It was clear.
Not maintained. Not recently cleared. But clear. The surface was packed down, the way a path gets when it's walked often. Weeds didn't grow across it. Stones had been kicked aside. The edges were defined by years of feet.
Vane had spent twenty years in the survey corps. He knew what an abandoned route looked like. He'd walked dozens of them. They were overgrown. They were broken. They lost their edges within a decade of being abandoned.
The Corps had abandoned this route decades ago.
And it wasn't overgrown.
He stood there for a long moment, looking at the trail.
Brandt came up beside him. "Vane."
"What."
"The light."
Vane looked up. The cloud had darkened. The day was running out.
"We need to go down," Brandt said.
Vane looked at the trail one more time. Then at the marker. Then at the plateau.
"Log it," he said.
He took out the ledger and wrote it all down. The route length. The blazes. E-42. The plateau. And the last line, the one he didn't fully understand yet.
Route appears unmaintained but shows signs of repeated use. Frequency unknown. Purpose unknown.
He closed the ledger and started down.