This commission took five years to complete and was Deacon's first commission for a large-scale, outdoor, permanent work. The artist originally chose the site of a big crazy-paving plinth that had been the home of the 'Air Hall'. A new road scheme lead to the relocation of the sculpture to its current site in 2015. The sculpture works as a huge drawing in space. Walking around it, the different shapes appear to contract and expand, changing from single black lines to rippling and smooth vessel shapes, defined by the black line. Everywhere you look, the sculpture frames sections of immeasurable space. The two forms appear to be in balance – it is ambiguous whether the larger form is pushing or pulling the smaller caged form and this adds to the sense of movement in this sculpture as does the twisting ladder form that connects them.