Round 303

The walls' synchronized breathing stopped completely—everything except that low pulsing hum growing stronger like heartbeat counting down seconds until next adaptation phase. Abby must decide whether to press forward, despite the growing danger, or attempt to find another path back to the chamber and the sybian. The entity's voice echoes through the tunnel: "You are... familiar." The ground beneath her gives a slight tremor, and the sound of distant stone grinding against stone echoes through the tunnel. A faint, flickering glow begins to emanate from the walls, casting eerie shadows on the stone floor. The light is soft and blue-green, like bioluminescent fungi, but it's impossible to tell if it's natural or part of the entity's influence.