rake.

About rake

A rake or raked stage is a theatre stage that slopes upwards, away from the audience. Such a design was typical of English theatre in the Middle Ages and early Modern era, and improves the view and sound for spectators. It also helps with the illusion of perspective. When features of the scenery are made to align with a notional vanishing point beyond the rear of the stage, the rake supports the illusion. These elements of scenery are termed raking pieces.