The underground stonework of Coldwork Bench was designed around a single, rigorous exact imperative: the sixty-four-pace quarter-grid.
From the central chamber at the 128-pace depth datum, four level check drifts branched outward into the living mountain like the arms of an ancient compass rose. Each drift was four feet wide, five feet high, and sixty-four paces long. He ended exactly beneath the four main quarter-grid intersections of the surface quarry floor above.
Kezra Venn knelt at the entrance of the northern drift, unrolling her field map point portfolio across a flat block of dressed limestone. Beside her, Paxa Sel set out her medical tray. Two tuned bronze tuning forks, a bottle of warm neat’s-foot oil, and fresh pads of carded sheep’s wool.
“The sound protocol down here is twice as strict as the Needlehouse,” Paxa said, her voice low and firm in the enclosed stone vault. “At twenty-nine paces, the sound had room to fade through the upper shaft. At one hundred and twenty-eight paces, the sound wave is contained by four hundred feet of solid overburden. When you strike that brass rod, the striking force has nowhere to go except through the rock and into your skeletal frame.”
Paxa pressed an oiled wool pad firmly into Kezra’s damaged left ear canal, securing it with a second dry pad over the mastoid bone and tying a broad linen bandage around Kezra’s jaw.
