Bin building bunker dug-out hole house military pillbox Underground aquamarine blue coast coastal concrete defence green lookout rocks sea shore tower two viewpoint war water World barrier empty eye frame hollow peep peephole see slot spy view wall watch window 2 army defend defense defensive desuetude emplacement England english field fortification Great Britain gun Hedera II infantry ivy overgrown rural Surrey appearance defending gun-emplacement gun-platform heritage historic history secure security solid structure weapon weaponry weapons bare barren antique Asian Asian-vanity-décor box brass chinese cloisonné collectable colored colorful colors coloured colourful colours contain containers decorated decorative designed detailed details enamel enamelled enamelled-box enamelled-pillboxes enamelling flower-designs flowers gold handy heart-shaped hinged inlays metalwork miniature-containers miniatures oriental pill-box pill-case ring-box small trinket trinket-box vintage red