#1. Hang Son Doong Cave, Vietnam Hang Son Doong cave is located in Quang Binh province, Vietnam and is currently known as the largest cave in the world. It is said that the cave was discovered in 1991 by a local man named Ho Khanh, but nobody dared to explore…
The spectacular Giant Crystal Cave is connected to the Naica Mine, located in Chihuahua, Mexico. It goes around 300 meters bellow the surface. The main chamber contains the largest selenite crystals ever found, some of them reaching 11 meters in length, 4 meters in diameter and about 55 tons in…
