Specifically, the management board of the park will partner with Jungle Boss Ltd., to pilot a two-day and one-night tour of the Dai A, Over, and Pygmy caves at the cost of VND600,000 ($26.6 ) per person.
Earlier, on July 4, Oxalic Ltd., was allowed to pilot a two-day and one-night tour of the Va and Nuoc Nut caves, worth 8 million VND per person, and a one-day tour of Nuoc Nut cave at the cost of VND1.65 million per person.
The new tours are part of a plan to diversify tourist products at the park.
Lying in the ecological restoration area at the park, the Dai A, Over, and Pygmy caves boast unique and unspoiled natural landscapes.
The Va and Nuoc Nut caves are incomparable due to their unique, grandiose, and magnificent beauty.
The Phong Nha-Ke Bang National Park was recognised as a World Heritage site by UNESCO in 2003, thanks to its impressive scenery and archaeological value.
It is also home to Son Doong cave, which was recognised in 2016 as the largest of its kind by three international organisations, including the UK-based Guinness World Records, Hong Kong-based World Record Association, and the US and India-based World Kings.
Since early this year, tourist arrivals in Quang Binh have reached nearly 1.9 million, up about 17 percent year-on-year, bringing an estimated revenue of VND2trillion ($88.8 million ), marking a year-on-year increase of 15 percent.
In 2018, Quang Binh strives to greet 3.5 million tourists by the end of the year, including 120,000 foreigners.