Thanks to discoveries made during a recent expedition in Vietnam, it appears the world’s largest cave, Son Doong, is even bigger than previously thought. Last month, a trio of British divers ...

Hang Son Doong is the world's largest known cave, with enough space in some of its passages to fly a Boeing 747 airplane ...

For 18 more years, the cave remained unexplored. Then, in 2009, two British cavers dropped into Son Doong and discovered the largest cave on Earth. The Son Doong is over 5.5 miles long and could ...

Two 325-million-year-old ctenacanth shark fossils discovered in Mammoth Cave shed light on ancient marine ecosystems.

the Son Doong Cave holds the title of the largest natural cave in the world. The cave, which measures over nine kilometers in length with a volume of 38.5 million cubic meters, is so massive it ...

THE world's largest cave transports you back to a time long before humans ever existed with its own underground weather system, mysterious river and rain forest. Hang Son Doong in Vietnam is ...

Sistema Sac Actun, the world's largest underwater cave system, spans an impressive 215 miles. This subterranean network of tunnels and crystal-clear waterways is a geological masterpiece with ...

the longest cave system in the world. Mammoth Cave is a treasure trove for ancient fish fossils, with more than 70 different species identified within its walls, according to a 2024 study ...

About 250 species of subterranean fish are known on Earth, eking out a living in a world of permanent dark ... researchers have discovered a cave fish that is much bigger—growing to nearly ...

When the fluids cooled, the crystals started forming. Pulpí Geode: We take a tour inside the largest crystal 'cave' of its kind in the world. Geologists have found that the anhydrite (the mineral ...

Here’s how it works. Why it's incredible: The cave is the biggest in the world and contains two jungles. Hang Son Doong is the world's largest known cave, with enough space in some of its ...