On Sunday’s episode of The Excerpt podcast: Hidden beneath Earth’s surface are caverns and pathways that hold the secrets of our planet’s very beginnings. Even after decades of exploration, there are ...

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 ...

BIG BEND NATIONAL PARK, Texas — Archaeologists exploring deep inside a remote cave in Big Bend were flabbergasted to discover tools left by an ancient hunter thousands of years ago. They say the find ...

Cathedral Caverns State Park is one of Alabama’s most impressive wonders. It’s tucked away in the northeast region of the ...

Imagine entering a cave and not realizing that beneath your feet lies a bottomless pit that could plunge you to great depths. Such was the Veryovkina Cave, the deepest-known cave on Earth, in the ...

Why it's incredible: The cave is so deep, the world's tallest building could fit inside it. The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world.

(via MinuteEarth) Krubera Cave, one of our planet’s deepest known caves, extends 2200 meters into the earth – that’s a depth of nearly six Empire State Buildings. Or at least, that's as far down as ...

From zip-lining over the forest to hiking scenic trails and exploring deep caves, there are plenty of exciting ways to discover this scenic corner of Ohio. Ohio's Hocking Hills is teeming with ...

Leah PelletierLocal Journalism Initiative ReporterRocky Mountain Outlook CROWSNEST PASS — Deep underground, with only the ...

Chinese astronauts, known as taikonauts, were sent into a large limestone cave system in a remote area of China.

People might not believe it if they haven't been to Missouri, but the state, which is also known as the Cave State, is home to over 7,000 caves offering a plethora of breathtaking subterranean ...