Deep inside a partially flooded cave of eastern Spain, scientists studied the walls by flashlight. Some markings and a coin jammed between rock formations caught their attention — and for good reason.

Delving into the Earth's secret chambers via underground river cave tubing presents a truly unique adventure. Merging the ...

Archaeologists discovered ancient Roman inscriptions and a 1,900-year-old coin wedged between rock formations while exploring ...

The cave is made from limestone rock formations, which were compacted 550 million years ago. Over time, acidic water that flowed into the cave through cracks dissolved parts of the rock ...

Colorado is home to some of the most breathtaking caves and caverns in the country, offering a perfect mix of adventure and ...

The interconnection between surface and cave environments underscores the importance of ... damaging effects below ground and where visitors seek river overlooks and rock formations alike. While ...

More recently, Cave of the Winds Mountain Park has added ... you'll be crouching under rock formations, too. Adventurous kiddos are entertained for hours with the outdoor attractions, but keep ...

Other pictures in the cave depict "transmorphic figure having antennae ... they clearly find the entirety of it important, including the rock formation, the trees, the land, the animals, even the wind ...

Martorell Deep inside a partially flooded cave of eastern Spain, scientists studied the walls by flashlight. Some markings and a coin jammed between rock formations caught their attention — and ...