the line drawing of the strange rocky formations set into a watery environment can only rely on occlusion and perspective to communicate to us. the line weight was pushed more strongly around the foreground silhouettes to emphasize the occlusion of one rock grouping to the next. even though the forms are soft and there are no straight lines converging to the horizon, there is still a strong sense of perspective just by changing the relative size of the rocks as they become foreshortened into the distance.