One of the world's deepest and most dangerous caves lies in Abkhazia, a disputed part of Georgia. It takes days to get to the ...

Photo from Qin, Liu, Zhang, Shi, Du and Zhou (2025) In an underground cave of southern China, an eyeless river creature with an externally “visible” skull moved through the dark waters ... “clear and ...

From crystal-clear waters to amazing rock formations, cave swimming is an adventure that is both thrilling and peaceful. Here ...