Explore the World's Largest Underwater Cave January 17, 2018 - The world's longest underwater cave has been discovered near the city of Tulum, on Mexico's Yucatán Peninsula. The new discovery ...

The organisms are genetically distinct from anything known on Earth, according to her team’s analysis, although they are most similar to other microbes found in caves and volcanic terrain.

The steep limestone cliffs on the eastern side of the Rock of Gibraltar contain four caves with archaeological and paleontological deposits that provide evidence of Neanderthal occupation over a span ...