All Clips 4 You on Instagram: "The Descent (2005) is widely regarded as a modern horror masterpiece, celebrating its 20th anniversary in 2025. Below are some of the most interesting facts about its production and legacy. Production Secrets The Cast Never Saw the Creatures: To elicit genuine fear, director Neil Marshall kept the "Crawlers" hidden from the actresses until the cameras were rolling for their first encounter. The resulting screams and panicked reactions seen on screen are real. Illus