Of those, 33 are located in Dan Hoa, Hoa Son, Trung Hoa and ThuongHoa communes in Minh Hoa district, nine are in Son Trach commune, Bo Trachdistrict and the remaining in Truong Son and Truong Xuan communes, Quang Ninhdistrict.
As part of the six geological strata of La Khe, Bac Son, MuGia, Cat Dang, Muc Bai and Le Ninh, mostly in La Khe and Bac Son that cover thelargest area, the caves are 44-602m from the seawater level.
Stalactites of different shapes have also been recorded there.
Vo Van Tri, head of the park’s Science and InternationalCooperation Office, said it is necessary to conduct an in-depth study to betterunderstand values of newly-found caves, contributing to their sustainablepreservation and exploitation.
Dubbed the “Kingdom of Caves”, Phong Nha – Ke Bang NationalPark was declared a World Natural Heritage by UNESCO twice in July 2003 andJuly 2015 thanks to its impressive scenery and archeological value.
It is also home to Son Doong cave, which was recognised in2016 as the largest of its kind by three international organisations, includingthe UK-based Guinness World Records, Hong Kong-based World Record Association,and the US and India-based World Kings.
As of mid-July, tourist arrivals in Quang Binh reachednearly 1.9 million, up about 17 percent year-on-year, bringing an estimatedrevenue of 2 trillion VND (88.8 million USD), marking a year-on-year increaseof 15 percent.
In 2018, Quang Binh strives to greet 3.5 million tourists bythe end of the year, including 120,000 foreigners.-VNA