Prepare to meet some of the world's largest and strangest creatures. Land of the Lost is a movie parody of a popular 1970s television series about a family trapped in an alternate universe inhabited by dinosaurs and primitive people. 'I'm of the age where I watched Land of the Lost on TV in my pyjamas every Saturday morning. It sounded like a completely brilliant idea to make it into a movie,' director Brad Silberling says. Rick Marshall (Will Ferrell) is the black sheep of the scientific community. He firmly believes in the possibility of time travel and so is mocked by his peers. He is encouraged by an enthusiastic colleague, Holly Cantrell (Anna Friel) to finish his tachyon amplifier, a device he believes will prove the doubters wrong. Dr Marshall hires tour guide Will Stanton (Danny McBride) and the trio heads to Devil's Cave, a deserted tourist attraction, to test it. But things don't go to plan. The machine causes an earthquake, and the threesome find themselves in a strange land; the amplifier is gone. The special effects are beyond impressive. One of the most exciting scenes is a narrow escape from a rockslide. The scene uses a simulated quake which shook cast, crew and cameras alike. Some of the boulders, which measured up to 6 by 9 metres, are real, but there are also manmade rocks to add to the effect, says special effects team member Michael Lantieri. 'We built extra light-weight debris that we put on trips and releases so we could drop them into the set on cue ... as we moved the camera through,' he says. Land of the Lost is the largest Universal Pictures production ever to be filmed at Universal Studio's lot, and it required special attention to detail to look realistic, according to production designer Bo Welch. 'The fact that it was another dimension was always in my brain. Even though a tree was a tree or a cave was a cave, I knew I would exaggerate it slightly and stylise it so that it had its own flavour,' he says. Silberling, who worked on Lemony Snicket's A Series of Unfortunate Events and Casper, manages to preserve the soul of the original, making this more than just an action comedy. Land of the Lost opens August 13 We have 15 pairs of tickets to give away for the August 11 screening at Festival Walk. To win, send an e-mail titled 'I'm lost' to firstname.lastname@example.org with your name, phone number and postal address.