Limestone cliffs and cave systems hold clues to a prehistoric ocean.

A limestone mine is already big enough to feel unreal. But finding a cave hidden inside that mine takes the whole thing to ...

Nothing about this feels like Ohio at first. One minute, you are surrounded by quiet farmland. The next, you are heading ...

Deep in north-western Puerto Rico, the limestone caves hide a world few people ever see. It’s dark. Damp. A tangle of tunnels ...

Perched above the Ohio River in Illinois, this scenic state park restaurant pairs sweeping views with classic comfort food ...

The first paleontological study of its kind is challenging what we thought we knew about the state’s natural history.

A skeleton discovered deep inside a remote limestone cave in Borneo shows a carefully healed lower-leg amputation dating to about 31,000 years ago. Dating was supported by radiocarbon testing of ...

Deep inside an Oklahoma quarry, palaeontologists discovered a small fragment of skin that is rewriting the history books. The ...

Scientists rediscover the rare Myiophanes kempi thread-legged assassin bug in Andaman limestone caves after a century of absence.

Postojna Cave is one of Slovenia's most famous attractions. Spanning over 24 kilometers, this cave system is known for its ...

Red ochre burials, ritual markings and myths across cultures show that red repeatedly marks liminal thresholds such as ...

Lying face-down in a floating cabana during an aromatherapy massage in a 500,000-year-old cave is the closest thing to nirvana I've ever experienced.