Roman Ondák is a Solvakian artist. "His work 'measuring the universe' grows over the course of the exhibition, emerging from an empty white gallery space. Each visitor to the gallery is asked to stand against the wall, their height is then measured and a mark made, named and dated using a pen. these amrks build up to form a dense black band running around the gallery walls, with every person leaving a physical trace in the space and on the show"
So there you have it!
Worth seeing HUGE!
You can also see my own mark being made and the whole work below.