They moved cautiously, their footsteps echoing softly in the stillness. The deeper they went, the more oppressive the atmosphere became. The ruins were a maze of corridors and chambers, each one more foreboding than the last. Strange symbols continued to adorn the walls, glowing faintly as if infused with some ancient power.
Suddenly, the ground beneath them trembled, and a low rumble echoed through the corridors. The group froze, their eyes darting around, searching for the source of the disturbance.
"What was that?" Mara whispered, her voice barely audible.
Selene closed her eyes, reaching out with her senses. "Something's coming. Something... ancient."
Before they could react, the walls around them began to shift, the carvings glowing brighter as if awakened from a long slumber. The passageway ahead of them twisted, the stones grinding against each other as the ruins themselves seemed to come alive.