A breathtaking ballroom carved from a single, massive crystal, hidden

A breathtaking ballroom carved from a single, massive crystal, hidden deep within a glacier. The vaulted ceiling is transparent, and through it, the vibrant hues of the aurora borealis dance, refracting into a million sparkling rainbows throughout the room. Delicate, frost-like filigree covers the walls, and the floor is a perfectly smooth sheet of dark ice, reflecting the celestial light show. Ethereal, majestic, fantasy art, hyper-detailed, a vision of frozen magic.