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

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