The last light of Day 123 faded into deep purple twilight. Then, Kezra Venn sat alone at the stone bench in the headhouse, her bonded notebook open before her.
Outside, the wind had risen to a high, keening shriek as a night gale swept across the saddle, driving dry snow against the thick slate gables. The granite walls of Windpit, built two paces thick from local plutonic stone, shuddered under the huge air pressure, but didn’t yield a fraction of an inch. Inside the stone hall, the single animal fat candle burned steadily in its glass hurricane lantern. It cast a warm pool of amber light across the ruled pages.
Kezra dipped her steel dip-pen into the horn inkwell. Her bandaged right hand gripped the pen with practiced, steady pressure.
On the left-hand page, the technical profile was already recorded with sharp-angled finality. The sixteen-pace Plot parcel of the surface collar, the five-hundred-and-twelve-pace upright descent, the four two-hundred-and-fifty-six-pace check drifts, the thirty-four-degree dip of the ultramafic dense green rock doorstep. The sound thickness metrics measured through her sounding rod. Every number was precise, repeatable, and checked by three independent soundings.
Along the margin, she had copied the stone carvings from the three ancient copper tags she had found in the equipment locker by the door. The tags bore the names of the land-mappers who had first established Windpit fifty-two years before: Orren Vale, Master Mapmaker. Branis Keth, Apprentice. Donald Vane, Sapper. Below their names was stamped the seal of the…


