Photoreal Tree in a Castle Dungeon

Photorealistic scene of a solitary tree growing inside an ancient castle dungeon. Damp, cold stone walls, rusty iron bars, and soaked flagstones. The tree has a thick, gnarled trunk with rough bark; roots coil through cracks in the stones, moss and small ferns clinging to damp surfaces. Warm torchlight from wall sconces casts dramatic chiaroscuro shadows, highlighting moisture on stones and the textured bark. Dust motes drift in shafts of light coming from a small overhead grate, giving the atmosphere of an old, ruined fortress slowly being reclaimed by nature. Wide-angle, low-angle perspective to emphasize the tree's scale against towering archways, with hyper-detailed textures: bark, moss, water reflections, cobwebs, and rusty chains. Realistic, cinematic lighting and depth of field for a breathtaking, eerie fantasy realism scene.