Keywords: Shield machine for Kammon railway tunnel.jpg ja 関 トンネル用のシールドマシン en Shield machine for Kammon railway tunnel before 1939 建築工事画報1939年1 号 関 海峡 絡隧道工事図 Ministry of Railways Japan / 鉄道 other versions Custom license marker 2015 06 01 PD-Japan-oldphoto Kanmon Railway Tunnel Uploaded with UploadWizard |