Created 2 to 5 million years ago, the Son Doong River Cave, Vietnam, is one of the most recent greatest wonders of the world. Only discovered in 2009 by British cavers, the awe-inspiring cave is 200 metres wide, 150 metres high and about 9 kilometeres long.
The gigantic cave has its very own weather system.
These pearls are formed as a result of dried up water drips that have crystallised in layers on grains of sand over hundreds of years.
The Great Wall of Vietnam is a 200-foot tall muddy calcite wall inside the Son Doong Cave.
The astonishing sight only gives out a limited number of permits each year. Be sure to inquire and book a flight to Vietnam as soon as possible so you don’t miss out on this breathtaking experience.
All images are properties of Carsten Peter. More original images can be found here.