Masking stairs into “D” Stollen Oct 3 1917…

Masking stairs into “D” Stollen Oct 3 1917 Standpunkt Marmolata Gran Poz: Maskierung und Eingang in den “D” Stollen… https://t.co/PfhcFSsNAw http://twitter.com/ThisDayInWWI/status/914988407796908033