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Hang Sơn Đoòng which translates as “mountain river cave”, is located in the Phong Nha-Kẻ Bàng National Park in Quảng Bình Province in Vietnam. The national park is also a UNESCO world heritage site. First found in 1990 by a local farmer, it wasn’t explored until 2009 when a British expedition team rigged ropes and descended down. Many people have described Sơn Đoòng as a lost world. It has its own lake, jungle and even a unique weather system.

In 2014 plans were announced to build a cable car into Sơn Đoòng. With many arguing that this would destroy the cave’s delicate eco-system and the local community divided over the benefits this development would bring, the film follows those caught up in the unfolding events. The documentary also uses the narrative as a lens through which to investigate related themes such as the challenges of modern day exploration, environmental conservation & sustainability, and the perils of operating as an activist in a country such as Vietnam where freedom of speech is severely curtailed.

The screening on Thu 29 June at 2pm is relaxed for people living with dementia.

This film contains flickering or flashing lights that may affect those with photosensitive epilepsy.


Alastair Evans

  • BBFC Ratings Info (May Contain Spoilers)


    Real footage shows activists being dragged across the ground by police during unrest in Vietnam. Some have bloody injuries and are forcibly hooded by police. Other sequences depict napalm bombs being dropped onto rural landscapes from US aircraft during the Vietnam War.

    Threat and horror

    In a 1954 animated adaptation of George Orwell’s ANIMAL FARM, it’s implied that a pig is hunted and then torn apart by dogs. A scene from KONG: SKULL ISLAND features brief sight of the massive titular creature in its natural habitat.


    There is mild bad language (‘piss’, ‘shit’), accompanied by other milder terms (‘hell’ and ‘God’).


    There is brief archive footage of people smoking joints while visiting Kathmandu.

    Injury detail

    There are photographs and video footage highlighting broken limbs in splints and severe bruising, results of police brutality against those considered by government as ‘dissidents’.


    There are upsetting images of Vietnamese people suffering from severe malnutrition during, and in the aftermath of war.

    Alcohol and tobacco

    Adults smoke cigarettes.

    Flashing/flickering lights

    This work contains flashing images which may affect viewers who are susceptible to photosensitive epilepsy.

  • Seating Accessibility Information


    Seat size

    Seats in the Cinema are 45cm (172/3“) wide and 46cm (18“) deep, are 40cm (152/3“) from the floor, and have 12cm (42/3“) between seats.


    Seats in the Cinema have armrests that do not fold away, and cannot be completely removed.


    Seats in the cinema have 30cm (112/3”) of legroom in front of seats, with additional legroom on row A and seats B1-B4 and B11-B14.

    Further information

    If you have any questions about accessibility our Box Office team are always happy to help and can be contacted on 01642 525199 or by emailing [email protected] - you can also tell us about your access requirements when prompted to do so during the online booking process.