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Maastricht - Sint Pietersberg Caves / Mines | by Rick Eisenmenger
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Maastricht - Sint Pietersberg Caves / Mines

80 km of the original 200 km are still preserved. That's a laarge dungeon : )

The caves in Sint Petersberg were formed by digging out the Marl that was used to build houses and churches. This led to a very extensive network of caves that were used as hiding places during World War II.

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Taken on June 19, 2008