Create a striking landscape of Planet Mustafar, showcasing Darth Vader's imposing black castle perched on a rocky cliff. The castle is a monolith that looks like a sharp spire, that is thin at bottom and gets thinner with height. Imposing obsidian spire pierces volcanic skyline. Ancient Sith fortress, geometrical black monolith rising from molten landscape. Streams of lava cascade down sheer cliffs. Crimson rivers snake through rocky terrain. Dark tower emanates malevolent energy, Storm clouds gather above, backlit by infernal light. Brutalist architecture stands defiant against hellscape. magma flowing down like waterfall from the edge, flowing below like rivers of fire. fortress suited for Dark Lord of the Sith. detailxl, cinematic view