Jim White was hauling water for cattle when he saw what looked like smoke billowing from a crack in the desert. Turns out it ...

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

High in the mountains of Guerrero, Mexico, a spelunker and her guide entered a narrow limestone cave they believed had ...

Forget about Barcelona, Mexico City, and Tokyo. These are the new travel destinations taking the world by storm.

Deep below the surface of an isolated mountain range in Mexico ... in these caves, rich with sulfur from the adjacent metal deposits, began dissolving the limestone walls, releasing large ...

Members of Mexico’s Cenotes Urbanos organization found a large globular pot while exploring Zumpango Cave and reported the discovery to officials, according to an April 21 news release from the ...

The big one here is the 10,000 troops. Many skeptics of the deal quickly noted that Mexico previously dispatched large numbers of troops to deal with migrants — 15,000 to the U.S.-Mexico border ...

Over the last three decades, he’s gone as far as Iceland and Ireland to visit famous caves. He's traveled to Mexico a couple of ... you see large patches in the Midwest and Southwest and ...

Carlsbad Caverns National Park in southeastern New Mexico is home to 119 ... formations and gypsum crystals. Carlsbad Caverns is a maze of underground caves born from an ancient tropical reef.

which makes these caves a perfect time capsule. This underworld is formed by a massive underground aquifer in the northern Yucatán Peninsula of Mexico. It is accessible by cenotes that connect ...