Visualize a hidden underground library with infinite shelves extending into the pitch-black darkness. These shelves are faintly lit by floating candles that cast dancing shadows on the walls. Books embellished with glowing arcane runes float mysteriously in midair, signaling a magical repository. Ethereal spirits of various descents, male and female, silently glide between rows of libraries, acting as quiet custodians of this vast chamber of ancient wisdom and long-forgotten knowledge. The scene exudes an otherworldly and eerie charm yet allures with its enticing promise of secrets from bygone eras.