These giant rocks could roll at any moment. The fact they haven't offers a window into the shaking of ancient Earth.

Much of Stonehenge has remained almost unchanged since Stone Age builders erected its massive sandstone boulders, or sarsens, 5,000 years ago on England's Salisbury Plain. A new study reveals how ...

Font is home to myriad giant, sandstone boulders, in all sorts of tempting shapes inviting you to grab them with both hands, and feet. But as a soft, porous, sedimentary rock, we need to avoid ...