1001 mystery
Mysterious circular holes in Russia
The strange incident occurred continuously since the end of the 1980s: among the lush old forest, deep caverns were found, into a hollow and slippery cave like an eel.
Circular Hole
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Articles about Circular Hole
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Space science
Three new small circular holes appear on the surface of the Sun, creating a localized storm from a mild level towards the Earth
But don't blame the Sun if you're sick recently!