The park was founded by a former U.S. Navy diver who envisioned a unique underwater spectacle that would bring people from ...

The Hranicka Abyss is at least 1,325 feet deep, and likely goes down further. — -- A team of explorers believe they have discovered the deepest known underwater cavern the world in eastern Czech ...

A new study, presented at the 17th International Congress of the Geological Society of Greece in May, found a "significant" amount of blue and transparent microplastics present in the Gourgouthakas ...

From the deep ocean floor to vast underground caverns beneath our feet, these places challenge our understanding of the world.

Deep in the Rising Star Cave system lies a mystery of paleoanthropology. Deep in the Rising Star Cave system lies a mystery of paleoanthropology: a chamber filled with the bones of Homo naledi. How ...

Researchers have discovered the remains of an ancient shark deep inside the world's longest cave system. The newly discovered shark, plucked from the walls of Mammoth Cave in Kentucky, lived around ...

A stone wall discovered deep inside Theopetra Cave in central Greece may be the oldest surviving human-built structure ever uncovered, archaeologists have revealed. Estimated to be over 23,000 years ...