In 1970, Soviet scientists began drilling into the ground on the Kola Peninsula in the far northwest of the country, hoping ...

The deepest man-made hole on Earth is no longer a gaping wound in the Arctic rock but a quiet, sealed scar. Once hyped as a literal “entrance to hell” in feverish urban legends, the Kola Superdeep ...

Add Yahoo as a preferred source to see more of our stories on Google. The deepest hole humans have ever drilled into the Earth is just 12.3 kilometers, about 0.2% of the distance to the planet's core.

Note 1: It is estimated that the true width of the mineralised sections for core hole LADD029 is 64% of the intersected widths in the above table. Regular measurements of inclination and azimuth were ...