The grade was perfect and the grove was gone.

Kaelen Ironfist stood at the section marker — a iron post driven into compacted earth, stamped Km 231, S47, Grade: 2.3%, Drainage: TBD — and read his own handwriting from eighteen months ago. The survey notes were precise because the survey had been precise. The route through Section 47 followed the natural fall of the lowland to the southeast, maintaining grade consistency within half a degree of optimal, which was as close to optimal as real terrain allowed and closer than most engineers would have demanded.

The grove that had occupied this section was not here.

The clearing had been done in Ironfall. The section foreman — a Human crew chief named Drathek, competent, unsentimental — had documented the clearing in his daily log in six lines: his job was to clear the section, the section had contained ironwood trees, the trees were now lumber stacked at the Greenvale supply depot, the lumber would be sold at Emberdusk market prices, the profit would go to the railway development fund, and none of this required emotional commentary in a daily log.

Kaelen walked the section. The earth had been tamped and rolled in the standard pattern — four-meter intervals, stake marks visible in the soil, a faint smell of iron oxide from the crushed ballast that had been laid down as the basecoat for the rail bed. Beneath his boots, the ground was firm and dry. Good drainage on the west side. Questionable on the east.

He stopped at the embankment. Knelt. Pressed his palm flat against the soil. Cool. No seepage. But the water table was three meters down here — he’d measured it in the original survey — and winter runoff from the escarpment to the northeast would add volume that the current drainage channels couldn’t handle without reinforcement. He’d seen it before on the northern grades — compacted fill that held well through summer and early Ironfall, then shifted when the freeze-thaw cycle began in earnest and the embankment developed a slow lateral creep that didn’t show in the surface until a section of rail developed a half-degree bow that transit teams couldn’t understand until someone dug down and found the soil had moved six centimeters sideways. Prevention was cheaper than repair. It was always cheaper than repair. Engineers who didn’t believe this learned it eventually, at someone else’s expense.

He wrote in his survey log: East embankment, Km 231-235. Drainage reinforcement required. Recommend stone-lined channel, 0.5m depth, full section length. Priority: pre-winter completion.

Then he stood and looked at the embankment fill stone.

A motif. Cut into one of the support stones at waist height. Small — the size of a man’s palm. A tree, stylised, with root structures that spread downward in interlocking patterns. Rootist design. It wasn’t part of the engineering plan, wasn’t in any specification document. Someone on the clearing crew had placed it here — deliberately, without instruction, without signature — and set it into the embankment fill among sixty identical support stones, where it would sit for as long as the railway stood, invisible to anyone who wasn’t looking at waist height with the light at the right angle.

Kaelen looked at it for three seconds.

He turned back to his survey log and wrote: Section 47 grade completed. East embankment: drainage reinforcement recommended. Section cleared for rail placement.

He did not mention the motif. He did not flag it for removal. He closed his survey book with the specific care of an engineer who had done his job correctly and knew exactly what his job was and what it wasn’t, and walked the section line east toward Km 232, where Tevra’s crew was driving stakes and the sound of iron on earth carried across the lowland in the four-second rhythm that he’d learned to use as a metronome for distance estimation: four seconds per stake, two hundred stakes per day, 340 kilometres of line, and he’d calculated the completion date to within a week, because that was what engineers did, and the calculation did not include the grove, because the grove was lumber now, and the lumber was at the depot, and the motif was in the stone, and none of these things appeared in his survey log, which was correct, which was engineering, which was — he stopped himself.

Walked on.

At the end of the section, where the survey corridor opened into the lowland east of Greenvale, three farm structures sat 400 metres off the route — recently vacated. No smoke from the chimneys. No livestock visible. The fields around them had been harvested in Emberdusk and not replanted. Someone had lived there and left, and the railway had not come close enough to explain the departure, and the departure was not in any report because no one had been asked to report it.

He stopped. Stood still for a moment. Looked at the structures with the same methodical attention he had given the embankment drainage and the motif in the fill stone — not because he believed the structures were his concern, but because looking was a habit his profession had built into him over years and he did not selectively apply habits. The farmhouses were well-constructed. Stone foundations, timber frames, recently re-thatched — the thatch was still pale, not yet darkened by weather. Someone had invested in maintenance before leaving, which meant the departure had not been distress-driven flight. Planned. Deliberate. Seasonal, possibly, though the unreplanted fields argued against seasonal absence.

He could think of reasons. Land-value speculation — the railway corridor raised property values within a kilometer of the route, and landowners sometimes sold before the surveyors arrived on the assumption that the surveyors’ arrival would raise asking prices. Voluntary relocation to Greenvale or Ashenveil, following the transit corridor toward opportunity. Something unrelated to the railway entirely.

He couldn’t think of a reason that required him to do anything.

Kaelen noted the structures in his survey log’s margin: 3 abandoned farmsteads, 400m south of corridor. Recent vacancy. Not route-related (nearest track position: 400m). Noted for completeness.

He walked on.

The stakes continued. Four seconds. Four seconds. Four seconds, all the way to the horizon.