Frequencies of the Bleeding Conduit

In the quiet dimness of the abandoned storage alcove, far enough from the main junction to muffle the frantic echoes of the swarm, Lyra worked by the faint, steady glow of her remaining magic. Her fingers traced the grease-stained schematics within the leather-bound maintenance ledger she had unearthed from the water-damaged debris. The emergency protocol outlined a complex series of manual pressure-release valves along the outer perimeter wall. If triggered correctly, these valves could divert the explosive arcane backdraft away from the master control chamber, giving Kaelen a narrow chance of survival against the impending structural collapse.

Time was a luxury she did not possess. Outside the alcove, the high-frequency hum that had briefly pacified the subterranean fauna had completely dissolved into a volatile, low-end rumble. The blind tunnel predators had snapped out of their daze, their overlapping screeches signaling a renewed and furious assault on the party's positions.

Back at the secondary maintenance shaft, Bram and Oren leaned their combined weight against the reinforced metal hatch as the creatures hammered heavily against it. The impact jarred the heavy iron wedges Bram had driven into the secondary locking lugs, sending stinging vibrations through the handles and into their arms. Knowing that shouting was impossible over the din of the pounding claws and the roar of the unstable conduit, Lyra pressed her palms and knuckles against the cold stone conduit wall inside her alcove. Using the rhythmic tapping of the emergency pressure-release sequence, she converted the ledger's critical data into a series of sharp, percussive vibrations intended to travel straight through the bedrock to the maintenance shaft.

Beside Bram and Oren, Thalia struggled desperately to maintain her footing. The oppressive scent of subterranean damp and sulfur pressed hard against the barricade, taking a severe physical toll as her breathing turned shallow. The residual effects of her acute mana depletion flared up with a blinding migraine, threatening to strip away her remaining defenses just as the iron-wedged hatch groaned and threatened to tear open from its hinges, leaving the fate of the entire party hanging by a fragile acoustic thread.