Mammoth Cave National Park in Kentucky is home to the world’s longest cave system, with over 426 miles of mapped underground passages. While here, visitors can hike the Cedar Sink Trail and explore an ...

The remains of a teenage boy who lived around 27,000 years ago suggest he was attacked by a cave bear—some of the first direct evidence of a predator attacking an ancient human The remains of the boy, ...

The 'negative hand,' dated to 67,800 years ago, visible beneath the calcite layer to the right above the brown shape. MAXIME AUBERT The karst caves on the Indonesian island of Sulawesi have proven to ...

Beneath a quiet stretch of hills near Ofra in the occupied West Bank, a vast hidden underground chamber has been found. Inside, it towers higher than a ten-story building but has remained unseen until ...