Geologists say Kentucky’s natural underground drainage system is overwhelmed following the recent massive rainfall - ...

Son Doong, the world's largest cave in central Vietnam, ranks among the world's most surreal destinations, according to U.K.

The cave is one of about 275 known caves in Sequoia and neighboring Kings Canyon National Park. The park's only publicly accessible cave, it has been open to visitors since the 1940s, making it one of ...