The Descent is a 2005 British horror film written and directed by Neil Marshall. The film follows six women who enter a cave system and struggle to survive against the humanoid creatures inside. Filming took place in the United Kingdom. Exterior scenes were filmed at Ashridge Park, Hertfordshire, and in Scotland. Because the filmmakers considered it too dangerous and time-consuming to shoot in an actual cave, interior scenes were filmed on sets built at Pinewood Studios near London designed by Simon Bowles. The Descent opened in cinemas in the United Kingdom on 8 July 2005. It premiered in the 2006 Sundance Film Festival and released on 4 August 2006 in the United States. The film received positive reviews and was a box-office success, grossing $57.1 million against a £3.5 million budget. A sequel, titled The Descent Part 2, directed by the first film's editor Jon Harris, was released in 2009. Plot Thrill seeker friends Sarah, Juno, and Beth whitewater raft together. Afterward, Sarah, along with her husband Paul and their daughter Jessica, are involved in a car accident when Paul is distracted. Paul and Jessica are killed, but Sarah survives. One year later, Sarah, Juno, and Beth, as well as friends Sam, Rebecca, and newcomer Holly reunite at a cabin in the Appalachian Mountains of North Carolina for a spelunking adventure. The next day, they hike up to a mountain cave entrance and descend. While in the cave, Juno apologizes to Sarah for not being there for her after the accident, but Sarah is distant. After the group moves through a narrow passage, it collapses behind them, trapping them. After a heated discussion, Juno admits that she has led the group into an unknown cave system instead of the fully explored cave system that they had originally planned to visit, and so rescue is therefore impossible. She then tells Sarah that this adventure was in the hopes of restoring their relationship. As the group presses forward with hopes of finding an exit, they discover aged climbing equipment and a cave painting that suggests an exit exists. Holly, thinking she sees sunlight, runs ahead, but falls down a hole and breaks her leg. As the others help Holly, Sarah wanders off and observes a pale, humanoid creature drinking at a pool before it scampers away. Later, the group comes across a den of animal bones and is suddenly attacked by a