view of drøbak sound from the hill above oscarsborg fortress, bunkers down below, historic ww2 site in norway

view drøbak sound hill oscarsborg fortress bunkers below historic ww2 site norway blooming copy space defense dracedil bak narrow europe growing growth kaholmen islands landscape nature plant scandinavia scenery scenic season summer sunlight sunny tourism travel vacation viken county weather white flower wildflower world war ii norwayn