A circular portal in a snowy landscape with a glowing blue interior.

In the heart of a serene, icy landscape, a circular porthole emerges from the ground, its metallic frame weathered and rusted, hinting at a long-abandoned ship or submarine. The porthole, now a portal to another world, is surrounded by jagged ice and snow-covered rocks, creating a stark contrast between the cold, harsh environment and the ethereal light emanating from within. The interior of the porthole is a mesmerizing blend of blue and white hues, with a glowing, liquid-like substance at its center, resembling a crystal ball or a portal to another dimension. The light from within casts a soft, ethereal glow, illuminating the surrounding ice and creating a sense of mystery and wonder. The scene evokes a feeling of exploration and discovery, inviting the viewer to imagine what lies beyond the porthole's threshold.