Log in
There’s more to see...
Sign up to see the rest of what’s here!
Visit Site

Related Pins

Hang Son Doong Cave, Vietnam. Photo by Carsten Peter

A Mammoth cave in Vietnam / Carsten Peter - National Geographic

Portugal # Pin++ for Pinterest #

Hang Son Doong (Mountain River Cave), Vietnam

Hang San Doong, "mountain river cave" in central Viet Nam.

HANG SON DOONG, VIETNAM - The “mountain river cave” may be the world’s biggest subterranean passage. A half-mile block of 40-story buildings could fit inside this stretch of the cave.