The trailer for The Descent focuses on the action-packed scenes to intrigue audiences, rather than showing the full backstory at the beginning. It uses quick editing and intense shots to build a sense of urgency. Posters show various images to attract viewers and reference positive reviews. The original billboard featured a protagonist in darkness with a crack of light, playing on the common fear of darkness. Producers later changed the main image out of respect after a London bombing attacked a bus similar to the original billboard depiction. The movie's website serves as the central hub for fans, providing information, forums and options to purchase the film.