The quarry ‘Auf Schleid’ is near Steffeshausen. Fossils from the Devonian period, which began approximately 420 million years ago and lasted approximately 60 million years, have been found here. At that time, the European land mass was down below the equator and covered by a shallow sea. The continental drift during the millions of years that followed moved it to where it is today. As the water receded, that which it had left behind was covered by other strata and petrified as time went on. The fossils found in the quarry bear the impressions of bivalves on the one hand and corrugated sand on the other, the latter having formed on the seabed. Some of these finds can be seen in the museum of local history in the arts and leisure centre (von-Orley-Strasse 24).
