Miroslaw Balka

"How It Is by Polish artist Miroslaw Balka is a giant grey steel structure with a vast dark chamber, which in construction reflects the surrounding architecture - almost as if the interior space of the Turbine Hall has been turned inside out. Hovering somewhere between sculpture and architecture, on 2 metre stilts, it stands 13 metres high and 30 metres long. Visitors can walk underneath it, listening to the echoing sound of footsteps on steel, or enter via a ramp into a pitch black interior, creating a sense of unease"--Gallery website.