During works in the basement, it was discovered that the Museum is built on a rock. That rock consists of layers of calcareous material. In-between those layers, a layer was found made of plastic material with distinct features.
The calcareous layers above and below the plastic layer date from the Lower Jurassic period: 180 to 200 Million years ago. This is confirmed by an ammonite found nearby and held by the Museum (Cat. Nr. 69). The plastic layer is made of colourful pieces that have cylindrical pins with LEGO written on each of them. Further research by the Museum suggests that the plastic layer is related to a civilisation from a period much more recent than the Jurassic. Products (or fossils ?) of this civilisation were somehow injected into cracks within the calcareous rock. These cracks must have been caused by tectonic or other (*) forces.
LEGO most probably refers to a company making plastic toys. Documents from the same period seem to suggest that the LEGO company, at one moment in time, shifted from a linear economy (in which it produced plastic toys, sold them en did not care where they ended up) to a circular economy (in which it recovered the toys sold and recycled the plastic material in new toys).(*) Apart from tectonic forces, it is also known that the civilisation under investigation could deploy forces comparable to tectonic ones. Known examples are the detonation of atomic bombs and fracking (= fracturing rocks underground to liberate natural gas captured within them)
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