The moss, Tortula muralis, with twist-topped spore-producing capsules and cushions of bristle-pointed leaves, advances across an exposed boundary of constraining brickwork built both to shelter and to confine human beings, towards a distant green hill. The hill contains the self-same shape as the moss and is topped by a trinity of trees, two straight-trunked, the other forked, symbolizing the natural communion of shadow and conscious selves.
