A team of researchers has confirmed the discovery of the deepest known blue hole on the planet in the waters of Chetumal Bay, Mexico. Detailed in a study published in Frontiers in Marine Science, the ...

Deep in the Arctic Circle, there’s a man-made hole that once earned the nickname “the entrance to hell.” The Kola Superdeep Borehole, the deepest hole ever drilled on Earth, reached a staggering 12 ...