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All 1,000 slots for Son Doong expedition adventure tour to the world’s largest cave in the central province of Quang Binh have been fully booked by domestic visitors for 2022, according to the provincial Department of Tourism.

All 1,000 slots for Son Dong expedition adventure tour to the world’s largest cave in the central province of Quang Binh have been fully booked by domestic visitors for 2022, according to the provincial Department of Tourism.

The world’s biggest cave, Son Doong, in the jungle-filled Quang Binh province of central Vietnam, appears to be even bigger than previously thought, according to the US Cable News Network (CNN) Travel.

Authorities in central Quang Binh province have approved a new expedition route, through the world’s largest cave, Son Doong.

A Polish tourist and a Vietnamese tour guide lost their lives while ziplining Hang Cop waterfall in Xuan Tho commune, Da Lat city in the Central Highlands province of Lam Dong.

As many as 360 domestic and foreign tourists have registered for a tour to explore Son Doong, the largest natural cave in the world, in the central province of Quang Binh in 2017.

A rope-swinging adventure tour at Datanla waterfalls, where three foreign tourists died in February, was under inspection on April 26.