The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed ...

This video showcases the complete construction of a platinum underground cave pool with a private underground living room.

Floyd Collins was pinned under a rock while exploring a cave in 1925. That history, recounted in song, is now on Broadway.

Watch as we create a luxurious underground swimming pool with a private cave-style living room, using only primitive tools and skills! This stunning build combines nature and creativity to craft ...

The hotel combines modern amenities with ancient architecture ... of an ancient monastery complex with interconnecting caves and underground tunnels, houses, and mansions. The restoration and ...

From intricate cave formations to the deep sense of history hidden within their walls, these underground wonders end up amazing everyone who walks through these caves, tourists and locals alike.

The area consists of 15 caves connected by joint-controlled passages and a flowing underground creek, which travels 60-some metres, according to the park’s website. You might also like: New killer ...

Jason Shoaf secured $1.2 million in the House budget proposal to use underwater drones to map Wakulla Springs and its connecting underground river. The project aims to create a 3D map of the cave ...

No armor withstands successive attacks. The military is forced to live underground in cellars: tunnels with carefully camouflaged entrances to prevent FPV drones from entering and blowing ...

Karst areas are made up of sinkholes, underground streams, caves, and springs that normally serve as a natural stormwater sewer. Excess water drains into sinkholes, then into underground cave ...

The National Parks Service has restored the original Harriet Tubman material featured on a webpage about the Underground Railroad after garnering outrage over its removal. In February, a photo and ...