an ancient hexagonal elven hall, in the center a circular pool of water with obsidian black surface that only reflects the starlight, gothic era style inpsired roof dome, no wall lights, new moon, only a stary sky, a doorway into blackness, plaine yet elegant slender columns, the floor around the pool is decorated with intricate mosaiics depicting celtic inspired knots made out of a silver metal, symmetrical chaos, dramatic atmospheric perspective, masterpiece, dnd, digital art style  --ar 16:9