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Upstairs or Downstairs?

Lava Caves in Mendig / Germany

The city of Mendig in Germany has northwest of the railroad station an area of about 0.3km² which is riddled with old cellars. This underground labyrinth was created by the quarring or mining of basalt. The basalt was used for millstones, which were exported and became the basis of the wealth of the city. They […]

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