Former Nazi defenses now home to thousands of bats Western Poland’s long forgotten Ostwall fortification serves as both a WWII museum and a refuge for flying mammals   Russian T-34 tank from WWII is pictured at the Festungsfront Oder-Warthe-Bogen (Fortified Front Oder-Warthe-Bogen), also called Ostwall (East Wall) fortification, the former Nazi German defence line near […]

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