Volcanic Siege over a Medieval Castle

Ultra-detailed fantasy concept art of a colossal volcano erupting behind a medieval castle perched on jagged cliffs. In the foreground a weathered stone fortress with tall square towers, crenellated battlements, and fluttering banners; a drawbridge spans a steaming moat. Rivers of lava carve through the landscape, their orange glow reflecting on mossy masonry and torches along the battlements. The midground shows lava flows and eruptive ash clouds; the background features the volcano sending molten lava fountains into a fiery orange sky. The scene uses cinematic lighting, dynamic composition, and painterly digital brushwork to emphasize texture — rough stone, scorched bricks, glowing magma, smoke, and embers. An epic, dark-fantasy mood with high-detail, suitable for concept art.