Inside the Earth, huge amounts of hot magma are under great pressure and are being pushed towards the surface.
A romantic village? An idyllic lake? This would have been unimaginable 45,000 years ago!
Clay and sand particles float around gently and settle on top of each other in layers on the seabed. But this tranquillity comes to an abrupt end.
Anyone who wants to learn more about tuff can easily find out about this rock and its uses in the 'Weiberner Schaufenster' ('Weibern Shop Window').
A volcano erupts. Hot drops of lava are thrown out of the vent and fall onto other fragments of lava which have been spewed out during earlier eruptions.