alone boulder building formation granite house isolated lookout outlook remote rock Sardinia vantage view bay bunkers cape coast coastal coastal-landforms concrete defence defend defending defense entrance entry headland hidden hills hillside historic history landscape partially-hidden pill-box promontory remnants rocks rocky sea shore shrubbery shrubs slope sloping stony vantage-point vegetation water World-War-2 wwii accommodation activity angles architectural architecture beach beachfront buildings colors colours costly culture exclusive expensive homes houses leisure light luxury mansions ocean ocean-views outdoors recreation roofing roofs rooves sand sandy scenery scenic shade shadow shadows sunlight sunshine surfaces trees vantage-points variety views waterways wealth wealthy boats crowded hillside-accommodation movement power rippling river river-views riverside Sandbar transport transportation travel aim aimed aiming angled Australian-Defense-Force barrel coastal-defense combat-readiness death defensive destruction destructive emplacement equipment gun gun-emplacement gun-platform gun-turret heritage hilltop military mounted mounted-gun placed placement protection protective secure security upward weapon weaponry weapons