The Descent Part 2

Production

Due to the first film being a commercial and critical success, it was decided that a sequel would be produced. While Marshall wouldn't direct the film, he was assigned to oversee its production.

Marshall received the first draft of the film in late July 2006, with no directors or cast in mind. He made it clear that intended to incorporate more of the feeling of claustrophobia like that of a particular scene in the previous film. Marshall tells Bloody-Disgusting.com about new ideas for the film, "The monsters they can deal with, and a bit of the claustrophobia, they can deal with, but the combination is definitely something we want to incorporate that into the sequel, by putting the monster and the girls in a really tight spot."

When The Descent was released in 2006 in the United States, Lionsgate picked up the film as distributor and edited the last few minutes of the film, changing the ending. When Dreadcentral.com asked Marshall which of the film's two endings the sequel would be picking up after, he said that it wouldn't be known until he approved a script.

Filming began in May 2008 at Ealing Studios in London. Ealing Studios was featured on BBC London in June 2008 going behind the scenes of the filming of 'Part 2'. In that broadcast it was confirmed that Shauna MacDonald would be returning to play her character Sarah. Most of the other original cast members are now also returning although most of them only in flashbacks and possible hallucinations. The film was shot on all three of the main stages at Ealing Studios and some scenes were filmed on location at Bourne Woods near Farnham in southwest Surrey, England.

The film was filmed using elaborate sets, miniatures, and blue screen digital images. This was revealed on BBC London's behind the scenes look.

The production was designed by Simon Bowles who designed the original film, art directed by Mark Scruton. The sets were built by DRS Construction and Armordillo.

The digital set extensions and all VFX were created by Swedish VFX company Filmgate.