This story appears in the January 2011 issue of National ... vegetation cover mounds of limestone here, making the place all but impenetrable. Below the surface, this part of Vietnam is one ...

This story appears in the June 2019 issue of National Geographic magazine ... At the end of Hang Son Doong stood the Great Wall of Vietnam, a 200-foot barrier to be conquered by both ladder ...

“I look for sparkling eyes, smiles …” Réhahn is originally from Bayeux in the French region of Normandy, but has been living in Hoi An on Vietnam ... from National Geographic to the ...