In 2011, Kapoor exhibited "Dirty Corner" at the Fabbrica del Vapore in Milan. Having fully occupied the site's "cathedral" space, the work consists of a huge steel volume, 60 metres long and 8 metres high, that visitors enter. Inside, they gradually lose their perception of space, as it gets progressively darker and darker until there is no light, forcing people to use their other senses to guide them through the space. The entrance of the tunnel is goblet-shaped, featuring an interior and exterior surface that is circular, making minimal contact with the ground. Over the course of the exhibition, the work was progressively covered by some 160 cubic metres of earth by a large mechanical device, forming a sharp mountain of dirt which the tunnel appears to be running through.