This is a grand underground library built inside a huge natural cavern. Several towering glowing crystal pillars run through multiple floors of the space, with winding spiral staircases wrapping around them, connecting stone shelves full of ancient tomes. Warm yellow floating lanterns drift inside the library, casting soft ambient light. Scholars in long robes sit and study quietly in the reading alcoves. A shimmering underground river flows through the bottom of the library, with stone arch bridges crossing it to connect different areas. The whole space has a tranquil atmosphere filled with a sense of fantasy and profound cultural heritage, like a hidden treasure house of civilization buried deep beneath the earth.
