The Monastery of Simonos Petra clings almost impossibly to a sheer cliff above the Aegean Sea in northern Greece.

The medieval monastery clings almost impossibly to sheer cliffs high above the shimmering turquoise of the Aegean Sea.

The formation of the Gondwana supercontinent also gave rise to an Antarctic range that has been covered by ice for 500 ...

In East Antarctica, a vast mountain range is hidden beneath thousands of meters of ice where it's been trapped for millions ...

A popular hiking trail on Mt. Charleston that suffered serious damage in a 2023 storm is back open.The U.S. Forest Service ...

Indeed, the hellacious stairs go by many different names, according to Brad Buhanan, community engagement director of Tech ...