Epic cinematic bird's-eye view of a medieval mountain fortress, hyper-realistic 8k render. The castle is built on a massive central rock formation, surrounded by a circular fortified village. A grand stone staircase leads up the cliff to the main keep. In the center of the village square below, a glowing white ancient tree stands out. A narrow river flows around the castle walls. Dense pine forests and misty mountains in the background. Moody overcast lighting, intricate details, photorealistic textures, Unreal Engine 5 style.