The trailer for The Descent uses suspenseful music and graphics to depict the film as a scary, action-packed survival thriller similar to Alien. It shows brief glimpses of the creatures that threaten the group of girls and the dark, confined setting of the caves without revealing key plot points. The poster depicts a bloodied woman looking for an escape from the creature seen in the background, while the billboard extends this imagery on a larger scale. After terrorist attacks that mirrored the film's underground setting, the marketing campaign was changed to be more respectful by altering the poster design. The website provides information about the film's plot, cast, and ways to watch the trailer or purchase tickets and DVDs.