destroyed world war 2 military shelter on green field in wegierska gorka, poland. sunny day, blue sky and beskid mountains in the

polish flag shelter bunker war history poland wegierska gorka invasion mountains westerplatte fortress military ww2 beskid historical building concrete second world defence protection ii border architecture old arming destroyed historic battle wwii spilled ruins fort europe wall control fortifications demolished weapon outdoor defense memorial equipment ruin safety security national armed forces