What is the name for the curved scenic backdrop at the rear of the stage,often representing the sky or skyline?

Question

Quizplus · Accepted Answer

A cyclorama is a large curtain or wall, often concave, positioned at the back of the stage area. It is used to create the illusion of the sky or another vast space, serving as a background that can be lit in various colors to represent different times of day or weather conditions.

What Is the Name for the Curved Scenic Backdrop at the Rear