Photographer Carsten Peter of National Geographic Magazine captured this unbelievable photo of a cavern in Vietnam.

Infinite Cave in Vietnam

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

Cave of Crystals, Mexico

Photograph by Carsten Peter, National Geographic

An explorer is no match for the gigantic crystals in Mexico’s Cueva de los Cristales, or Cave of Crystals. In 2000, two brothers drilling for lead and silver in a remote part of northern Mexico discovered the underground crystal incubator. The largest of the crystals started to grow some 600,000 years ago.