They had crawled into Cave of the Winds, deep inside a cave system known as Clearwater ... drilling and hammering bolts into the slick rock to hold their climbing ropes, their odds of success ...

A lava delta is created when molten rock reaches a flat area ... trying to build atop burial caves, says that whenever human remains are found inside a lava tube, they render the entire cave ...

New research has found that one of those pits, in Mare Tranquillitatis, collapsed into a lava tube and made an underground ...

Silver Dollar City has a unique history, and it all revolves around the natural cave, dubbed Marvel Cave. The beginnings of the cave as a tourist attraction started in 1894 by a C ...

The oldest representational cave painting dates from about 30,000 years ago. Most date from 20,000 years ago or less, in what's called the Upper Paleolithic era. Rocks were ground up to make ...

Barciela and X. 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 ...

However, the algorithm can go haywire and generate structures in bizarre areas, from tall pillager towers to villagers inside caves. Redditor stofix_ shared some images of perhaps one of the most ...

The Extremes crew had trekked for two days through steep valleys covered in lush jungle to reach Hang son Doong cave ... gently sloping rock. In Hang son Doong there is huge variety of these ...