A vast desert where the sand dunes are composed of shimmering, liquid silver, endlessly shifting and flowing like mercury under a dark, starless sky. Massive, geometric stone monoliths jut out from the sand, etched with glowing runes that pulse in sync with distant, thunderous vibrations beneath the earth. The horizon is dominated by a gigantic, surreal city of towering spires made of smooth obsidian, with rivers of molten glass flowing between them. In the sky, strange, floating orbs of light drift aimlessly, casting haunting, flickering shadows across the dunes.