The Dropped Mallet

A third dead mammoth in five days was two mammoths too many for a man who preferred his afternoons horizontal. The gray bull lay wedged between twin basalt slabs at the bottom of the gulley, stiff as a frost-heaved boulder and leaking grease into the gravel. Across its ribcage, Hobb the Tanner swung a rusted iron cleaver with the rhythmic, joyless thud of a border executioner, barking orders that the wind tore into jagged pieces before they could reach the rim.

Dag Flintrow backed away from the lip of the pit one boot-heel at a time. He kept his head ducked below the rim of scrub willow, his stained caribou parka pulled tight against the sleet. Between his greasy mitts, he held a hardwood mallet bound in rawhide—clan property, notched forty times along the grip to record forty winters of tallow scrapers who had died of ruptured backs before seeing their fortieth name-day. Dag had no intention of adding a forty-first notch on his own behalf. The wind off the high ice pack had a bite that turned snot into needle-ice inside the nose, and three hundred yards up the ridge sat a dark chimney of stone where the drafts did not reach.

He broke into a trot once the butchery pit fell behind the crest. His tracks vanished beneath the stinging drift almost as quickly as his sealskin boots pressed them into the crust. To any common spear-carrier from the Red-Chert band, the northern face of the ridge looked like a single unbroken spine of black basalt, split by frost wedges and choked with ancient rime. But Dag had spent seven seasons dodging Hobb's work gangs; he possessed an eye for stone seams the way a wolverine possessed an eye for unattended meat caches. Where two massive pillars met under an overhang of blue glacial ice, the rock did not fracture in jagged steps. It ran plumb and square, fitted together with joints so tight that five centuries of moss had failed to take root.

A warm draft blew out from a vertical slit between the pillars. It smelled faintly of copper slag and dry cellar dust, wholly unlike the dead-tallow stench clinging to Dag's sleeves.

Using a curved antler pry from his belt, he wedged the point into the ice crust sealing the lower opening. Three sharp taps with the pommel cracked the blue glaze cleanly along its stress line. The chunk fell away, revealing a narrow crawlway that sloped downward into the mountain at a gentle pitch.

Dag squeezed through feet first, pulling his pelt bundle and mallet after him. Inside, the wind ceased instantly, replaced by a stillness so sudden his ears rang. The floor was not tumbled scree, but flat slabs of polished dark stone, free of frost and dry enough to make his damp leather soles squeak. Even better, heat rose through the floor slabs—a dull, slumbering warmth like the stones around a dying hearth fire.

He settled into the crook of two angled pillars, kicked off his outer boots, and folded his wool wrap into a pillow against the wall. Through the slit above, Hobb's muffled bellow echoed across the tundra, demanding to know where that idle son of a flint-carver had gone with the mallet. Dag closed his eyes and let out a long breath.

A high, thin vibration struck the bone of his right jaw.

Dag opened one eye. The sound was not in the air; it came directly through the dark stone behind his skull. It started as a faint warble, like a horn sounded three valleys away, then settled into a steady, needle-sharp whistle.

He shifted his head to the left. The pitch changed, vibrating through his cheekbone. He rolled onto his belly and pressed his chin to the floor, but the hum rose through his sternum, setting the loose tallow grease in his throat dancing like water in a beaten bronze pot.

"Cursed draft," Dag muttered, sitting up with a grunt.

The stone face opposite him was not solid rock. At waist height, half-recessed beneath an arch of greenish-black synthetic slate, sat a circular opening roughly the diameter of a clan shield. Inside the dark throat, small horizontal louvers of dark metal were angled downward. The wind was not entering; it was being drawn inward with a rhythmic, rhythmic pull that set the thin fringe of Dag's parka fluttering. Every second breath, the intake whistled—a flat, mechanical note that bored through his temples and set his teeth on edge.

He crawled across the floor and peered into the dark flue.

Deep inside, forty paces down a conduit straight as a thrown javelin, three pale amber points of light blinked in slow alternation. They went dark, clicked like a striking spark-stone, and pulsed again. The sound seemed to originate from whatever sat behind those points: a low, turbine-like whine that climbed a fraction of a tone every time the cold air rushed past the intake flaps.

Dag reached for a loose stone on the floor to wedge into the louvers, but the chamber was bare. The ancient builders had left no rubble, only precision masonry that offered nothing thicker than a fingernail to grip. He shoved a handful of dry moss into the grate; the suction immediately inhaled the clump with a faint wet gasp, followed by an indignant sputter from the lights down the pipe. The whistle returned, two notes sharper than before.

His head pounded behind his eyebrows. Two miles down the slope, Hobb would be skinning the bull without him, swearing blood oaths over the cold fat. Down here, sleep was impossible. The hum felt like a heated copper awl drilling through his ear canal.

"Shut your throat," Dag whispered.

He hefted the skinning mallet in his right hand. The head was heavy ironwood soaked in thirty seasons of caribou lard, weighted at the nose with a plug of river-lead. It was balanced for cracking frozen marrow bones at arm's length.

Dag crouched, sighted down the center of the intake vent, and let fly with a hunter's snap of the wrist.

The mallet flew true, tumbled twice through the draft, and struck the central louvers dead center.

A sharp, metallic crack echoed down the shaft. Instead of bouncing off the bronze slats, the heavy leaded head smashed through the center vane with the sound of snapping bone. It plunged deep into the darkness, tumbling through a cascade of internal baffles with a series of frantic, hollow clatters.

From the depths came a sound like a wet hide dropping onto hot coals: a sizzle, an electric snap, and a harsh mechanical cough.

The suction reversed with explosive force.

A blast of dry, superheated air roared out of the aperture, catching Dag full in the chest and knocking him flat on his back. A shower of crystalline dust sprayed from the broken vent, glittering like crushed glass in the gloom.

In the middle of the cloud, a sharp object struck the lintel above the opening, bounced off the basalt floor, and skittered across the flags toward the exit.

Dag rolled aside on instinct, thrust out his left hand, and clamped his palm over the skittering fragment before it could tumble out into the snowdrift.

His fingers closed around something cold, heavy, and hexagonal.

He brought it to his face. It was not stone, at least not any stone known to the knappers of the northern bands. The piece was roughly the length of a man's thumb, cut from flawless, honey-tinted quartz with six razor-sharp facets polished so smooth they felt oily to the touch. Two parallel copper wires, fine as horsehair, were fused directly into the blunt base of the prism. When Dag turned it between his calloused fingers, the crystal caught the dim tundra light and threw a pale violet beam against the ceiling.

Deep inside the wall, the frantic clattering ceased.

For three heartbeats, the silence was absolute. No wind whistled through the broken louvers. No draft pulled at his caribou fringe.

Then, buried miles beneath the basalt bedrock, two clear, crystalline notes rang out through the stone.

Ding. Dong.

The chime was melodic, pleasant, and completely unhurried, like a silver bell struck in a high southern court to announce the arrival of soup.

A fraction of a second later, the floor under Dag's palms dropped three inches.

The basalt pillars shrieked as hundreds of tons of ancient permafrost cracked across the mountain's flank. A low, grinding roar began far beneath the foundations, rising through the soles of his boots until the loose gravel on the shelf began to dance.

Dag slipped the quartz sliver into his inner belt pouch and reached for his boots.

"That wasn't a chimney," he said to the empty flue.