A fantastical icy landscape with a glowing portal at the end of a stone archway.

Beneath the ethereal glow of a celestial portal, a grand, ancient stone archway beckons into a realm of icy wonder. The arch, adorned with intricate carvings and towering columns, stands as a testament to a bygone era, its surface etched with the passage of time. As the eye travels down the corridor, the walls and ceiling stretch into the distance, their stone textures softened by the ethereal light that filters through the portal above. The portal itself is a spectacle of light and shadow, a swirling vortex of blue and white hues that seems to pulse with an inner life. It radiates a luminous energy, casting a serene glow that illuminates the surrounding space. The light dances across the stone, creating a play of shimmering reflections that add depth and dimension to the scene. The walls and ceiling are adorned with delicate, crystalline formations that seem to have formed naturally, adding to the otherworldly beauty of the setting. As the light filters through the portal, it creates a mesmerizing effect, casting long, ghostly shadows that dance across the floor. The floor itself is a mosaic of icy blues and whites, with jagged, snow-covered rocks scattered throughout, adding a rugged, natural element to the otherwise pristine environment. The overall atmosphere is one of tranquility and mystery, inviting the viewer to step through the portal and explore the wonders that lie beyond. This image is a perfect blend of ancient architecture and fantastical elements, making it a captivating piece of digital art that evokes a sense of wonder and exploration.