Fengjie County, in the Chongqing Municipality, is where you'll find Xiaozhai Tiankeng, the world's largest and deepest ...

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

According to Science Alert, scientists studied a 98-foot sediment core taken from the floor of the Great Blue Hole. Their ...

SEOUL, South Korea (AP) — A motorcyclist who fell into a cavernous sinkhole that opened on a Seoul street was found dead after an overnight search, officials in South Korea’s capital said Tuesday.