Descent to the Forgotten City

How long does three inches of ancient bronze hold against six tons of starving muscle?

I braced my boots against the damp floor stones, gripping my ratcheting wrench until the cold metal bit into my palm. Ahead in the narrow corridor, the dying blue light of Folasade’s coral spark painted the walls in sickly violet shadows. Behind the thick quartz-glass panes lining the gallery’s left flank, the black water churned with furious, coiled pressure. The scrape of chitin against stone vibrated directly through my soles, rattling my teeth in their sockets.

"It knows we have no depth to maneuver," Folasade said. Her voice remained low, steady, devoid of the panic clawing at my ribs. She shifted her grip on her broken bronze spearhead, her webbed diver’s sandals finding sure purchase on the slime-slicked flagstones.

"Then it has better tactical sense than most generals in the Khanate," I muttered, flicking my gaze upward.

Above us, the ceiling was not solid bedrock. It was a barrel vault of interlocking granite blocks, tied together by oxidized bronze tension rods. Decades of salt and damp had eaten into the mortises, but the keystone arch directly over the corridor’s narrowest neck still carried immense compressive load. If that central tie-rod snapped under tension, forty paces of masonry would collapse like a tripped deadfall.

The quartz pane shattered with the concussive crack of a siege ballista.

A torrent of black, frigid seawater punched through the fractured frame, knocking me back two steps. With the flood came the beast.

It was an abyss-hunter—twelve spans of ribbed carapace, pale as bleached bone and thick as an assault ram. It had no eyes, only twin rows of sensitive lateral pits along its snout, flaring wide to drink in our warmth and movement. Its mandibles snapped shut on empty air, shearing a chunk of solid masonry into dust with a sound like grinding millstones.

The backwash slammed Folasade against the right-hand wall. She did not scream. She rolled with the current, planting her feet against the stone as the creature lunged, its barbed forelegs thrashing to pin her into the rising surf.

"Kwame!" she shouted through the roar of cascading water. "The roof! Tell me you see a fracture!"

"I see a keystone!" I yelled back, sloshing forward through knee-deep foam. "Keep its snout under the arch! Two breaths!"

She did not ask how. She pinched a measure of gray powder from the leather pouch at her throat—her second-to-last pinch of volcanic pumice—and drove her palm straight into the foaming surge beneath the beast’s jaw.

The water curdled instantly. A thick fan of razor-sharp, azure glass-coral erupted from her fingers, stabbing upward in jagged spires. The crystalline needles drove deep into the monster’s lateral sensory pits.

The abyss-hunter reared back with a screech that rattled the bronze conduits along the ceiling. Blinded and enraged, it thrashed its armored tail, slamming its bulk against the corridor’s support pillars.

Stone groaned. Cracks spiderwebbed across the arch.

That was my window. I scrambled onto a fallen slab of granite, hauling myself up toward the ceiling’s anchor bracket. Water rushed around my waist, tugging at my leather harness with greedy fingers, but I locked my legs around a bronze drainage pipe and leaned out into open air.

The tension rod was six paces above the floor, held in place by a tapered bronze wedge pin. The pin was bowed under three hundred years of settling stone. It wanted to shear; it only needed an external lever to slip its seating.

I slotted the hexagonal jaw of my ratcheting wrench over the head of the locking nut.

"Clear the arch, diver!" I roared over the deluge.

Folasade thrust her spearhead into the monster’s softer belly plates, using the leverage to kick herself backward through the churning flood. She cleared the threshold of the arch by a single yard just as the beast lunged after her scent.

I hauled down on the wrench handle with everything I had.

Metal screamed against metal. The rusted threads stripped with a violent shudder that sent agony lancing through my shoulder. For half a heartbeat, the wedge held. Then the bronze rod parted with a report like thunder.

The keystone gave way.

Thousands of pounds of granite blocks cascaded down in a deafening avalanche. The collapsing vault caught the abyss-hunter squarely across its armored neck and spine, driving the leviathan into the stone floor with pulverizing momentum. The beast’s frantic thrashing shuddered once, twice, and then went still as tons of rubble buried its bulk, choking off both the creature and the breach in the glass gallery.

The roaring flood dwindled to a sluggish trickle.

The corridor floor beneath us shuddered violently. The shockwave of the ceiling's collapse had fractured the ancient drainage conduit beneath our feet.

"Move!" Folasade grabbed my harness strap, hauling me off the conduit pipe as the floor slab tilted.

We scrambled forward, our lungs burning, our boots skidding over slick debris. Behind us, the entire corridor gave way in a chain reaction of settling stone. Ahead, the passage ended abruptly in a yawning void.

We slid over the broken lip of the stone ledge together, tumbling down a steep incline of polished basalt.

I hit the slope hard, rolling twice before my boots dug into soft, luminescent silt. I lay on my back, gasping for air, my heart slamming against my ribs like a trapped bird. Cold water pooled around my ankles, but it was shallow—barely reaching the laces of my boots.

"Still breathing, artificer?"

Folasade knelt beside me, her bronze armor spattered with black ichor and gray sediment. She extended a calloused hand. I took it, letting her haul me upright.

"Granite from the mainland has the courtesy to stay dry when it tries to kill you," I wheezed, rolling my aching shoulder.

"You dropped an entire aqueduct on an apex trench hunter," she said, her lips curving with grim amusement. "I might forgive your lack of gills."

I wiped silt from my brow and turned to look at what lay beyond our landing ledge.

The breath left my throat.

We were not in a cramped subterranean tunnel anymore. We stood on the high, terraced balcony of a colossal subterranean canyon, vaulted beneath a dome of black basalt so high it seemed to hold its own sky. Across the vast basin stretched a megalithic metropolis—towering tiered palaces of carved turquoise stone, connected by sweeping aqueducts and massive bronze archways.

Veins of phosphorescent deep-sea coral grew along the colonnades, bathing the silent avenues and wide plazas in a soft, ethereal azure glow. Water flowed through grand canal channels in the streets below, yet the air on the terraces was crisp, cool, and undeniably breathable.

No tide-marshal's charts had ever marked this place. No siege fleet of the Khanate had ever dreamed of its existence.

Folasade stepped up beside me at the terrace balustrade, looking out over the glowing spires. For the first time since boarding my flagship, the warrior's tension melted from her posture, replaced by quiet wonder.

"The First Sunken Court," she whispered.

I looked at the impossible gears and massive water-gates lining the distant city walls, then down at the wrench still clutched in my hand.

"We aren't just surviving this, diver," I said softly. "We're going to map it."