Additional 44 caves have been discovered in Phong Nha – Ke Bang National Park in the central province of Quang Binh, raising the total caves found so far in this area to 405, according to the park’s management board. Phong Nha – Ke Bang National Park was declared a World Natural Heritage by UNESCO twice in 2003 and 2015. The park is home to 405 caves, including Son Doong, which was recognised in 2016 as the world’s largest cave. In 2018, Quang Binh strives to greet 3.5 million tourists by the end of the year, including 120,000 foreigners. -VNA