While hiking through dense forest, we stumbled across a hidden opening in the ground – and it led to a cave over 150 feet deep. Rappelling into the darkness, we had no idea what we’d find below.

Beneath the surface of a quiet river, we found an entrance that led us into a vast underground world. The deeper we went, the ...

The surface of Mammoth Cave National Park encompasses about 80 ... You never forget that you are deep in the Earth. And nowhere else can you get a better lesson in the totality of darkness and ...

Italy is famous for many things, from stunning seaside towns to historic cities like Rome. But few people know that one of ...

Sitting atop an underground cave system, Medicine Lake will look completely different depending on the time of year you visit ...

As you venture through the Flying Waters region in Clair Obscur: Expedition 33, you can find a pale-colored Demineur similar to the Jar Nevron you encountered ...

From lava flows to impact craters and fossil beds, this is a country where rock formations tell stories more powerful than ...