# In the heart of the St. Pietersberg

The marl caves in the St. Pietersberg at Maastricht, with old graffiti on the walls, shelters for refugees and a chapel of the Jesuit order. In some places marl is still extracted from the corridors and geologists search for fossils in the caves and cut out pieces of stone. A large cement factory is slowly breaking down part of the mountain. Furthermore, images of houses, churches and castles built from marlstone and fossils of a giant turtle and a mosasaur.

- Kind: Film
- By: Polygoon-Profilti (producent)
- Archive: [Europeana](https://www.europeana.eu/item/2051906/data_euscreenXL_https___www_openbeelden_nl_media_652616)
- Licence or status: [CC BY-SA 4.0](http://creativecommons.org/licenses/by-sa/4.0/) (as the archive states it)
- Credit: Netherlands Institute for Sound & Vision
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/europeana/2051906~data_euscreenXL_https___www_openbeelden_nl_media_652616?play=1)