The film crew consists of six members, led by producer Theo Webb, as well as cameramen and a safety expert. Nearly a ton of specialized film making equipment is required for the production.

Members of a BBC film crew arrive in Dong Hoi Airport, Quang Binh Province, on January 27 2022.

They will spend 18 days filming at Son Doong, En, Va caves and several other scenes in Phong Nha - Ke Bang National Park.

Their arrival followed the invitation of Oxalis Adventure, the only tour operator allowed to host tours to Son Doong Cave, to promote Vietnam's tourism through a documentary film series in preparation for the reopening of international tourism, Oxalis said.

The BBC's natural history programs always attract a large worldwide audience.

Sir David Attenborough, a well-known BBC presenter, introduced their 2022 nature documentary series during the U.N. Climate Change Conference (COP26) in the U.K. in October 2021.

The wonders of Asia will be brought to life in amazing detail for this landmark natural history series, which is expected to reach more than 500 million people around the world.

Son Doong opened to tourists in 2013 with a five-kilometer-long system, 150 meters high and 200 meters wide, containing at least 150 individual caves, a dense subterranean jungle and several underground rivers.

All 1,000 slots for adventure tours to Son Doong in 2022 have been fully booked by domestic tourists.

Quang Binh to halve entry fees to famous caves in 2022

Authorities in Quang Binh decided entry tickets to many of its famous caves including the world's largest Son Doong would be cut by half from next year to stimulate tourism.

Quang Binh cave tours offer unprecedented discounts as new outbreak hits tourism

Caves in Quang Binh Province, dubbed Vietnam's 'kingdom of caves,' can now be toured for half the price as the new Covid-19 wave slashes travel demand.

Travel firms resume outbound tours as border restrictions eased

After a long suspension due to Covid-related border closures, Vietnamese travel firms have resumed outbound tours with prices of up to VND338 million ($14,900).

Bac Giang approves for plan of Ho Cao lake ecotourism, resort, sport and entertainment urban area

(BGO) - The People’s Committee in Bac Giang province has issued Decision to approve for the detail plan to construct Ho Cao lake ecotourism, resort, sport and entertainment urban area in Huong Son commune, Lang Giang district (1/500 ratio).

Vinh Phuc Province’s Tam Dao recognised as national tourist area

The Minister of Culture, Sports and Tourism issued Decision No.170/QD-BVHTTDL on January 25, recognising the Tam Dao tourist site in the northern province of Vinh Phuc as a national tourist area.

Source: VnExpress