This strange almost perfect 'ice circle'
has appeared on a frozen lake in Siberia. While scientists have ruled
out UFO involvement, they are puzzled as to how the mysterious,
2.5mile-wide geological phenomenon has formed in Lake Baikal. It was
spotted at the southern edge of the lake while another was seen near
the centre. The images were taken by astronauts aboard the
International Space Station circling 220 miles above Earth. They
charted the progress of the circles when they first appeared on April 5
until April 27 when the ice was beginning to split apart.
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