TateShots: Alan Johnston's ceiling drawing at the Tate Britain

Here's the video made by the Tate about the drawing I was part of making, with artist Alan Johnston, on the ceiling of the new cafe space in the new, refurbished area of Tate Britain.

"He and his assistants spent 2 weeks lying flat on their backs as they delineated a painstaking lattice of pencil mark. At first glance Tactile Geometry looks like a falling shadow. Only when you approach it closely is the secret revealed. Johnston talks to TateShots about his process and intention."

Alan's own website: http://www.drawingashadow.com/list.php