Researchers in Cambodia surveyed dozens of previously unexplored caves and found several species never seen before, including a pit viper that is still being studied.

Underwater archaeologist Octavio del Río takes photos of the remains of a prehistoric human skeleton discovered inside the flooded cave system in Actun, near Tulum, Mexico, Nov. 18, 2025 A prehistoric ...

The Waitomo Glowworm Caves in New Zealand are enchanting wonders of the natural world ...

Vietnam's Son Doong, the world's largest cave passage, started its life millions of years ago as a crack the width of a piece ...