Son Doong discovery

كهف ابن Doong في مدينة Trach تان ...

Son Doong cave in Tan Trach commune, Bo Trach district, Quang Binh province, Vietnam is considered to be large naturally. Hang this in may not Cave Phong Nha-Ke Bang. Son Doong cave is part of the system link with more than 150 other caves in Vietnam near the Lao border. [1] [2] Time New York ranked Son Doong at No. 8 among 52 places in the list. to 2014. [3]