The quarry of Wilhelm Ostwald Park, which is located in the middle of Porphyry Land Geopark, reveals the thickness of cold magma.
Three hundred million years ago, the eruptions of a supervolcano tore two huge calderas (basin-like craters) with diameters of up to 60 kilometres into the local landscape and buried them under a layer of lava and ash up to 500 metres thick. The history of the largest extinct volcanic area in Europe is told today by porphyries, i.e. volcanic rocks and their weathering products: kaolin clays.
Climate change, ice ages and weathering over millions of years all had a considerable influence on the landscape. Glaciers left their traces. They not only brought enormous quantities of rock debris, diverted rivers and eroding the porphyry mountain peaks, they also left glacial and wind abrasion in the bedrock.
The grave of Wilhelm Ostwald, his wife Helene and their children is located in the quarry of the park. It is an idyllic place of tranquility during a walk. The excellent acoustics of the quarry also make it possible to experience unique open air concerts in summer. Look forward to our quarry concert, which takes place every year in late summer, mostly in August around the birthday of Wilhelm Ostwald.
Our nature studies workshop ‘The super-volcano beneath our feet’ takes you on an exciting expedition into the history of the earth.