12" Standard Depth Square. On a S14" board.
Details:
As sketched. Man's head (based on image to be provided) in white helmet poking through a 'hole' in the browny-grey rubble like covered cake. With a trowel and flashlight next to him. "The Great Escape after 30 years with WMFS" printed in font of The Great Escape. Finished with Fire & Rescue tape draped over. Board covered red and having black inscription on yellow scroll if required.