The Kola Superdeep Borehole in Siberia : 12.2 kilometers with temperatures exceeding 180°C+unexplained sound

The Kola Superdeep Borehole in Siberia : 12.2 kilometers with temperatures exceeding 180°C+unexplained sound

In the 1970s, Soviet scientists began one of the most ambitious experiments in human history - the Kola Superdeep Borehole in Siberia. Their goal? To drill as deep into the Earth's crust as technology would allow, to study the planet's inner layers firsthand.

Over two decades, they bored an astonishing 12.2 kilometers (40,230 feet) deep - further than any other human-made hole before or since. But what they found down there shocked even the scientists themselves.

At depths where they expected solid, cool rock, they instead encountered temperatures exceeding 180°C (356°F) - hotter than the surface of Venus. The heat made further drilling impossible as the rock behaved more like plastic than stone, bending and deforming under extreme pressure.

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