In the heart of the St. Pietersberg

About

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.

Human-made No record of this work says a model made it. What this means.