Inside The Olivier Theatre's Weird And Wonderful Revolving Machine
The National Theatre venue's "drum revolve is an extraordinary, five-storey, computer-operated double lift contraption that enables the stage to be lowered through the floor and spun around. And, because it's split into two, operators can swap one half for the other without, in theory, the audience suspecting a thing." Nina Caplan goes backstage "to see the beast in its lair."
The Telegraph (UK) 10/29/13 (includes video)