Rock Form (Porthcurno) is an upright standing form, with a narrow base widening out towards the top, which itself is flat. The edges of the sculpture are curved and the form is punctured by several curvilinear openings, the inner surfaces of which are smooth and hold a warm golden patina, which contrasts with the green patina of the rough outer surfaces. The sculpture reflects Hepworth’s on-going interest in the relationship between landscape and human experience. The artist took her inspiration from the rock forms near Porthcurno, a hamlet close to Land’s End in Cornwall, 'with its queer caves pierced by the sea'.

This artwork is located at the Royal Botanic Garden, Edinburgh.