Sep 29
In an age where every square mile of Earth’s surface is so easily photographed and surveilled, to be a true explorer—to see what no human has ever seen before—one has to descend into the bowels of the Earth. Armed with high-tech lasers scanners, cavers are slowly mapping that underground world. And now they’ve found the world’s largest cave chamber, equivalent in size to four Great Pyramids carved out underground.
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