substitute
(c) any other landscape structure (other than a retaining wall), or earthworks, if the vertical distance from the top of the structure or earthworks to natural ground level is not more than—
(i) if the top of the structure or earthworks is above the natural ground level—0.4m; or
(ii) if the top of the structure or earthworks is below finished ground level—1.2m.
Note Natural ground level and "finished ground level"—see the territory plan, vol 2, pt 3 (Definitions).