Memorial to concentration camp prisoners, secret Führer headquarters for Hitler, former bunker with 25 tunnels, built 1944-1945 by concentration camp inmates, Jonastal, Arnstadt, Thuringia, Germany, Europe.
Memorial to concentration camp prisoners, secret Führer headquarters for Hitler, former bunker with 25 tunnels, built 1944-1945 by concentration camp inmates, Jonastal, Arnstadt, Thuringia, Germany, Europe