When stone unveils life in the Jurassic
Locals have been quarrying shale here since the 1500s, originally for building materials. Along the way, they began uncovering breathtaking marine fossils—ichthyosaurs, plesiosaurs, ammonites, belemnites, crinoids, even traces of fish and ancient plants—so exquisitely preserved they seem almost alive. The secret lies in the shale itself: a fine, bitumen-rich clay laid down in a low-oxygen seafloor environment, which helped keep delicate remains intact, down to skin, stomach contents—even embryos.
In the 19th and 20th centuries, Holzmaden’s quarries were worked by local farmers who turned into fossil hunters during the off-season. Their passion and craftsmanship, passed from one generation to the next, helped build one of the world’s most impressive collections of Jurassic marine fossils—now proudly housed in the Urweltsteinbruch Holzmaden Museum.