Illuminated Ice Cave by Paul Zizka/ Aurora (9 images)

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Thrill-seekers climb an illuminated ice cave while the night sky is lit by the stunning Northern Lights.

The daring ice climbers scaled the 30ft cave with headlights which created mesmerising blue glows.

Beyond the cave, the night sky was ablaze with shades of purple, green, red, blue and yellow from the spectacular Aurora Lights.

These stunning photographs were taken by Paul Zizka, 38, at the Athabasca Glacier in the Columbia Icefields, Alberta, Canada.
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