This document analyzes and summarizes key elements of mise-en-scène in the film The Descent. It discusses the cave setting, with bones scattered on the floor indicating things have been eaten. It describes the limited and dim lighting from night vision and flares that creates shadows and tension. It outlines the crawler costumes with prosthetic makeup to look disfigured and inhuman, and the explorer props and costumes like helmets and torches that indicate their activities. It notes the important role of acting, with scared facial expressions and screams, and the crawler's unusual spider-like movements showing they have adapted to the cave environment.