cyclorama
A cyclorama is a colossal sheet lurking backstage, promising infinite vistas but delivering nothing more than a white canvas lit by lights. It changes moods with a flick of illumination, worshipped as a deity during performances but condemned to the dumpster the moment the curtain falls. Its bulk is a staff’s nightmare as they wrestle to roll it up, whispering eternal regrets of "if only it were lighter…".