One California woman is sounding the alarm after her community discovered homeless people were residing in underground caves, warning the below-ground encampments are a threat to public safety.

A Spanish woman finally emerged from a cave Friday, following a solo challenge lasting more than 500 days. Beatriz Flamini left the surface to live 230 feet underground in November 2021 ...

A tour boat capsized in an underground cave along the Erie Canal in upstate New York on Monday, leaving one person dead and sending nearly a dozen others to the hospital, officials said. A total ...

Astronauts may one day set up camp in caves on the moon, according to research highlighting the existence of the newly identified underground structures. An Italian research team on Monday ...

Its walls are marble — not the granite that dominates the Sierra Nevada range — and an underground stream runs alongside much of the cave trail. The last and largest “room” is known as ...