Massive dimensional portal opening in a dark spirit realm

Front view of a single massive circular dimensional portal that is actively opening, centered in the scene. The viewer is standing in a dark, shadowy spiritual realm, looking directly at the portal as it forms and expands. The portal is not fully stable yet — it is in the process of opening, with powerful lightning bolts striking around its edges, explosive energy arcs, and thick swirling smoke and vapor being pushed outward by the force of its activation. The circular structure is made of rotating rings of glowing energy, plasma currents, and radiant energy veins. Bright volumetric light rays burst outward from the portal into the dark environment. The surrounding world outside the portal is dark, ominous, and heavy, filled with black smoke, shadow fog, floating ash, and oppressive spiritual atmosphere. The ground is cracked and lifeless, and darkness dominates the environment. Inside the portal opening, clearly visible through the circular center, is a bright, evolved, clean world filled with radiant golden and white light. The interior shows a peaceful, luminous environment with crystal clear air, glowing particles, soft clouds, and divine harmonious landscape. The bright world is visible only inside the portal opening, creating strong contrast with the dark outer world. Energy waves ripple outward from the portal as it opens, distorting the air and space around it. Smoke curls around the edges, lightning cracks through the forming structure, and glowing particles float in the air. Ultra cinematic composition, epic scale, hyper realistic, volumetric god rays, dramatic lighting, Unreal Engine 5 render, octane render, ultra detailed, masterpiece, 8k resolution, sharp focus, cinematic atmosphere