How many people have conquered the depths underground?

The distance from the surface to the center of the Earth is about 6,378km. Although we have tried very hard, we still cannot 'touch' this depth.

The distance from the surface to the center of the Earth is about 6,378km. Although we have tried very hard, we still cannot 'touch' this depth. Up to the present time, the deepest place that people dug was only 12,376m - Z-44 Chayvo oil well, far from reaching the center of the Earth.

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