rail road tunnel next to trass caves at brohltal valley at eifel region in germany. mining area of volcanic rock in roman times.

rail road tunnel next to trass caves at brohltal valley at eifel region in germany. mining area of volcanic rock in roman times.

  • JPG 300 DPI

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  • Author: dreamstime
  • License:buy for Personal Use & Commercial
  • File Type: JPG
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