"We know that daytime migratory insects use the sun, so testing the starry sky seemed an obvious thing to try." ...

Archaeologists from the Australian Museum, the University of Sydney and The Australian National University (ANU), in collaboration with First Nations community members who hold cultural connections ...

The stunning cave in Naica, Mexico, is home to some of the largest crystals on Earth, but harsh conditions can kill those who stay too long.

Two 325-million-year-old ctenacanth shark fossils discovered in Mammoth Cave shed light on ancient marine ecosystems.

Inside UK’s deepest underground waterfall in the Yorkshire Dales - Gaping Gill, which has been hailed a 'once in a lifetime experience' ...

Across the Pennines, Metro’s Phil Haigh spotlights The Forbidden Corner, which calls itself the ‘strangest place in the world.’ For £18, get lost in a ‘labyrinth of tunnels, chambers, follies and ...

Tucked away in the small town of Grottoes, Virginia lies an underground marvel that feels like stepping into another dimension – Grand Caverns, a subterranean palace that somehow remains one of the ...

While everyone’s flocking to California’s beaches and wineries, there’s an underground masterpiece in Redding that’s been ...

Over the past several years, investigation within the Cova Dones cave system in Valencia has shown it to be one of the most ...

Son Doong, the world's largest cave in central Vietnam, ranks among the world's most surreal destinations, according to U.K. travel magazine Wanderlust. Sinkhole 1 aka "Watch Out for Dinosaurs" inside ...

The world’s largest cave is over five miles long - so big that even a Boeing 747 could fit inside it. Hang Son Doong is in Phong Nha-Ke Bang National Park in Vietnam, near the border with Laos ...