The Dock Door or Scene Dock door is a large strong door that allows for large items of scenery, technical equipment, props, animals etc to be brought on stage from outside the theatre. In this example, because street level is higher than the level of the stage ramps are required to enable items to be brought in and out through the scene dock door. Your pictures show stage crew pushing empty equipment cases up the ramp and out to a waiting truck. Preferably the Scene dock door is located close to the stage, this however is not always so; in this case it is off the scene dock to stage left of the stage
