Completed subway tunnels. New Austrian Tunnelling Method.

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  • Photo title: Completed subway tunnels. New Austrian Tunnelling Method.
  • Author: Emrahmert75
  • Cover photo description:
  • Completed subway tunnels in Turkey. New Austrian Tunnelling Method - NATM
  • Image ID:291863933
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Keywords for Facebook, Twitter and LinkedIn timeline photos

abandoned architecture austrian background cave completed corridor creepy danger dark deep dirty geology industrial inside interior light method mystery natm old passage path stone subway tunnel tunnelling tunnels turkey underground urban wall 4k
 
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