The People’s Committee of Quang Binh province has approved an experimental adventure tour of Son Doong Cave suggested by Howard Limbert, expert of the British Cave Research Association.
Mr Limbert recommended that due to unexplored nature of cave, the trial tours, to be held twice a month, should consist of a group of only seven or eight visitors.
A group of British scientists from the British Cave Research Association, led by Mr Limbert, conducted a survey in 2009. Limbert suggested that in addition to ensuring the safety of the tourists, authorities and travel companies should protect the primary site and the surrounding ecological environment. Exploration of the cave is preferential in dry season, between February and August.
The trial tours will be launched next year before operating officially.