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 subscriber just showed us a deep cave on his property, and we couldn't resist exploring it! After hiking through the woods for about 40 minutes, we arrived at the massive pit, and from the looks of ...

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

A jungle inside ... calcite on the cave floor that is more than 200 feet tall, smothered by ferns, palms, and other jungle plants. Stalactites hang around the edges of the massive skylight like ...

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 ...

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 ...

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 ...