Earth turned solid rock into something like plastic. 🕳️

Earth turned solid rock into something like plastic. 🕳️ . . . By 1989, Russia's Kola Superdeep Borehole had reached 12,262 meters. Temperatures near the bottom hit 180°C—about 80°C hotter than expected—warping equipment and making the rock difficult to drill. Drilling continued until 1992, but the 1989 depth was never surpassed. Humanity's deepest hole had barely pierced the crust.