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

The Tlacotepehuas, a civilization once located in the Sierra de Guerrero, have long been a mystery, with very little ...

A mapping expedition in the Tlayócoc cave in Mexico led a professional cave explorer to a hidden chamber containing shocking ...

Archaeologists uncovered ancient offerings in a sealed cave in Mexico, revealing secrets of the lost Tlacotepehua ...

Looking for blind cavefish in San Luis Potosí, biologist Luis Espinasa and his team accidentally found the remains of giant ...

A hidden chamber inside Tlayócoc Cave in Mexico’s Sierra de Guerrero has revealed ancient artifacts that may shed light on the mysterious Tlacotepehua people, a lost civilization known only through ...

Its walls are marble — not the granite that dominates the Sierra Nevada range — and an underground stream runs alongside much of the cave trail. The last and largest “room” is known as ...