Rupert Norfolk’s works require curiosity and an investment of time to be fully appreciated. His subtle manipulations of materials and objects aren’t often immediately apparent. Wall, for example, is a simple dilapidated dry stone wall, seemingly removed from site and placed in the gallery. On closer inspection, however, this is no ordinary ruin. Its limestone rocks are symmetrical in shape, one side of each rock having been chiselled to mirror the hollows, marks and protrusions naturally formed on its opposite side. Incorporated into a wall, the stones, with their mimetic interventions, introduce a discreet artifice and an uncanny tension.