Seyun crouched behind the frost-heaved lip of the southwestern channel trench. He rested his gloved right hand on the seasoned ash of his staff and studied the first bronze test socket from three paces away. Up close, the structure bore none of the clean, sky mystique that the Aperture Court’s lower-valley proclamations attributed to Heaven’s instruments. It was a heavy, eight-sided collar of cast bell-bronze, eighteen inches across and sunk four inches into the living dark rock, secured by dovetailed iron lugs and brazed with thick seams of tarnished silver solder. Every four heartbeats, when the central returning hub thirty paces upslope completed a rotation, a pale blue-white current ran down the stone-cut trough and entered the socket’s outer stabilizing ring with a low, greasy hum that smelled of scorched animal fat and wet copper.
Beside Seyun’s left knee, Vaska Ren unfastened the waxed leather flap of his sample packet with his intact five-fingered hands. From the fold of oiled wool he drew out a single nine-inch test needle of dull, unpolished bronze. Not a combat weapon, and never again an instrument for pinning a young fighter’s shoulder blades to a check table, but a fine-tuning rod he had carried out of the lower archive so they could match the exact alloy and ringing pitch of the summit’s locks. Vaska’s scarred neck worked silently in the freezing draft. Six nights ago at the lower road shrine, when Reth Mal’s backup relay had tried to force a spoken pass-key code out…


