The bizarre spot has been shared widely on YouTube, with enthusiasts claiming that it is proof humanity once lived in the area and built a man-made structure.
Some scientists have theorised that the frozen area of Antarctica was once much warmer – with possible temperatures of up to 20C.
Addressing the topic of climate in the region, Dr Vanessa Bowman of the British Antarctic Survey once said: “Go back 100 million years ago and Antarctica was covered in lush rainforests similar to those that exist in New Zealand today.”
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