A sole airplane banks sharply, flying perpendicular with the ground in the Topdressing Plane wall mural. New Zealand travel photographer David Wall captures an agricultural airplane soaring in a clear blue sky. The wings of the white plane are marked with green and orange stripes, and a matching orange stripe marks the side of the cockpit and body of the plane. Topdressing planes, invented in New Zealand, are used to apply fertilizer to large farm fields.