Glacial Ice Cave Portal Framing Undulating Chartreuse Aurora

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Subterranean perspective photographed from inside an Arctic glacial ice cave looking out through a natural arched portal. The cave walls and ceiling consist of ancient, compressed glacial ice exhibiting deep sapphire and electric cobalt blue hues, sculpted into smooth scalloped depressions that glisten in faint ambient light. Through the cavern opening, the cold night sky is dominated by an undulating ribbon of chartreuse and soft magenta aurora borealis curving over distant snow-capped mountains. The contrasting temperatures of the interior deep blues and the exterior emerald sky produce extraordinary chromatic depth. Shot with deep focus to keep ice textures and stars simultaneously sharp.