They had crawled into Cave of the Winds, deep inside a cave system known as Clearwater ... from moon-pale banks of sediment in the Drunken Forest—a cave named for formations that tilt at ...

While hiking through the woods, we unexpectedly found what looked like a simple pit in the ground—but when we threw a rock inside, the echo told a different story. This cave is at least 150 feet ...

Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about ...

There is a cave in the world which has its own ecosystem. This cave has a forest, river, rocks, trenches and much more. It was declared the world's largest cave in 2009.

One of the great challenges of filming inside caves is lighting them ... the collapsed rock and now there is a unique underground forest, around 200 metres beneath the Earth’s surface.

A cave diver's paradise, the Bahamas is home to an extensive network of life-sustaining underwater caverns chock-full of history—and a whole lot of mystery.

Discovered in 1999 inside an abandoned mine in Southern Spain, Pulpí Geode is the largest crystal 'cave' of its kind in the world. But what exactly is a geode and how do crystals form inside them?

There are renewed concerns in Modesto after a fire was set inside a cave along the Tuolumne River. It's among the latest ...