Son Doong Cave will be closed for 4 months.

The world's largest cave in Quang Binh province will close to visitors until the end of 2015 to allow for ecosystem restoration and ensure safety during the rainy season.

The closure of Son Doong Cave for four months aims to restore the cave's ecosystem, ensuring that the flora and fauna within the cave are not overloaded and that the water sources are not polluted. Furthermore, it ensures the safety of tourists, as this is the rainy season, and water levels can rise over 90 meters inside the cave.

The ecosystem inside Son Doong Cave is considered unique and one-of-a-kind.

The process of closing Son Doong Cave was carried out at the request of British cave experts and approved by the Quang Binh Provincial People's Committee.

The ecosystem inside Son Doong Cave is considered unique and unparalleled. Photo: Ryan Deboodt.

Mr. Nguyen Chau A, Director of Oxalis company, said that during the closure of Son Doong Cave, the staff will undergo professional training and participate in community activities such as whitewashing local schools and collecting garbage at tourist sites.

Exploring Son Doong Cave is a world-class tour costing $3,000 per person. In 2015, the cave welcomed 482 visitors, 26 journalists from newspapers and television (National Geographic 360, ABC News, Channel 5 - Singapore), and photographers Ryan Deboodt and David Lloyd.

The company has paid 8 billion VND in forest environmental service fees to Phong Nha - Ke Bang National Park for bringing tourists to Son Doong Cave, En Cave, Va Cave, and Nuoc Nut Cave. This figure is expected to be even higher in 2016.

According to VnExpress