Lonely stone castle beneath a stormy dark fantasy sky

Masterpiece. best quality. Epic. cinematic. Award winning. Ultra detailed. dramatic. attention-grabbing. challenge winning. A solitary, weathered stone castle stands silhouetted against a stormy, bruised sky. Skeletal trees with gnarled branches claw at the heavens, their roots entwined with the crumbling foundations. A single, tattered banner flutters weakly from a broken turret. The air is thick with an oppressive sense of forgotten history and lingering dread. This scene is rendered in a dark fantasy concept art style, with influences from Zdzisław Beksiński's atmospheric dread and H.R. Giger's biomechanical horror, emphasizing deep shadows and muted, earthy tones.