Published:  11:53 Monday - January 16, 2017

The Quang Binh People’s Committee has approved bumping up the sales of tours to Son Doong cave in 2017, one of the world’s largest caves, from 500 top 800 due to increased demand.

The 2017 tours, on sale on the website of Oxalis Adventure Tours, the sole operator, offer a five-day and four-night tours with a maximum of ten people at the cost of US$ 3,000 per person from January-August 2107.

Each tour requires a team of 25 porters and cooks, a tour guide, two cave experts and two park rangers.

Visitors need to ensure they are in good health before embarking on the adventurous trip. People who suffer from high blood pressure, cardiac disease, joint problems or diabetes are not eligible for the trip.

Son Doong, which is 150 meters high and 200 meters wide, first became known worldwide in 2009 when it was explored by members of the British Cave Research Association led by Howard Limbert and his wife Deb Limbert, guided by local resident Ho Khanh.