(Source: dr-johndorian, via makethebestoftheirworst)
The amazing photo featured above was taken in a huge cavern complex within the bowels of central Vietnam – in Phong Nha-Ke Bang National Park. During the spring of 2009, a team of spelunkers began exploring a mountain river cave in Vietnam and discovered a passage carved by a subterranean river millions of years ago.
Like a castle on a knoll, a limestone formation shines beneath a skylight in Hang Son Doong Cave. A monsoon storm had just filled the pool in the foreground, signaling that exploring season was ending. Referred to as the “infinite cave” this underground labyrinth is more than 2.5 mi long (4.0 km).
Photographer: Carsten Peter/©National Geographic Magazine
Summary Author: Mark Jenkins/©National Geographic Magazine
