When combined, the two systems formed a 215-mile-long underground labyrinth ... hundreds of miles of underwater caves in the state of Quintana Roo in Mexico. Explorers created maps of the ...
A group of divers have connected two underwater caverns in eastern Mexico to reveal what is believed to be the biggest flooded cave on the planet, a discovery that could help shed new light on the ...
Carlsbad Caverns is home to some of the most spectacular examples of underground geologic features found anywhere in the United States. Located in southeastern New Mexico, the park contains more than ...
The umbrella leaks at places called sinkholes, from which surface water makes its way underground, eroding the limestone into a honeycomb of caverns. Mammoth, the world's longest known cave system ...