Scientists Found the Largest Underground Thermal Lake at the Bottom of a Subterranean Abyss
A team of scientists from the Czech Republic has discovered the world’s largest underground thermal lake, located in southern ...
npca.org5y
Carlsbad Caverns National Park
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 ...
National Geographic news11y
Venture Deep Underground in This Breathtaking National Park
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 ...
Explore Kentucky's Underground Wonders at Cave Country
On January 30, 1925, cave explorer Floyd Collins made history when he became trapped while exploring Sand Cave near historic Mammoth Cave. It took nearly two weeks to reach Floyd who was found dead of ...