a surreal digital painting of a fantastical treehouse perched on the back of an Ent, surrounded by an eerie autumnal forest shrouded in fog and mystery, drawing inspiration from the concept art of Alan Lee, John Howe, and Simon Stlenhag. The image should be highly detailed, with fine-tuned 64k resolution, realistic textures, correct proportions, intricate scene composition, atmospheric lighting, detailed foliage, misty effects, and captivating storytelling.