The Phong Nha-Ke Bang Park authorities have announced that the park’s researchers have discovered 44 additional caves which all are wet grottoes and range from 44m to 602m above sea level. The majority of them are 200-350m above sea level.

Various types of stalactites were found in the cave, including mineral deposit stalactites, water-flow-created stalactites, and decentralized stalactites.

Thirty-three of them are located in Dan Hoa, Hoa Son, Trung Hoa, and Thuong Hoa communes in Minh Hoa district. Nine are in Son Trach commune, Bo Trach district, and the rest are in Truong Son and Truong Xuan communes in Quang Ninh district.

As part of the six geological strata of La Khe, Bac Son, Mu Gia, Cat Dang, Muc Bai and Le Ninh, the ones in La Khe and Bac Son cover the largest area.

More research on these caves is required so that they're preserved and exploited in a sustainable manner. 

The new caves that we're discovered have raised the total number of caves found in this area to 405. This includes 58 others that were discovered last year, according to the park’s management board. Many of them, including Son Doong, Tu Lan, En, Va, Nuoc Nut, Thien Duong, and Phong Nha, have opened to tourists, making Quang Binh one of the country’s tourism hotspots.

Phong Nha – Ke Bang National Park was declared a World Natural Heritage by UNESCO twice - once in July 2003 and another in July 2015 - thanks to its impressive scenery and archeological value. Son Doong Cave was recognized in 2016 as the largest of its kind by three international organizations, including the UK-based Guinness World Records, Hong Kong-based World Record Association, and the US and India-based World Kings. 

Quang Binh welcomed nearly 1.9 million tourists in the first half of 2018, including 85,000 international arrivals, which is an increase of about 17 per cent and 22.8 per cent year-on-year, respectively. It brought an estimated revenue of 2 trillion VND ($88.8 million), marking a year-on-year increase of 15 percent.