The rocks consist of quartz-porphyry formed by volcanic activity during the Devonian period.
The Feldstein features a man-made viewing platform reached by a steep iron staircase built into the rock face.
Archaeologists discovered a triple-walled rampart system surrounding the rocks, indicating a major cult or defensive center in ancient times.
The stones serve as one of the few nesting sites for the peregrine falcon in the Hochsauerland region.
The Feldstein stands at an elevation of 728 meters above sea level.
Botanically, the site supports unique lichen and moss species that thrive on the specific acidity of the porphyry rock.
The site was officially declared the first National Natural Monument in Germany in 2017.
The Bruchhauser Steine are four massive porphyry rock formations located in the Arnsberg Forest Nature Park near Olsberg. These distinct geological monuments, named Feldstein, Bornstein, Ravenstein, and Goldstein, were formed approximately 380 million years ago. The site is designated as Germany's first National Natural Monument due to its unique geological, botanical, and archaeological significance. The Feldstein, the tallest of the four, rises 92 meters and features a plateau accessible via a staircase. Archaeological excavations have uncovered evidence of a prehistoric fortification on the site dating back to the late Bronze Age and early Iron Age. The surrounding area contains a significant population of rare flora and fauna, including the endangered peregrine falcon. Visitors can access the rocks via a network of marked hiking trails that connect the formations. The site is managed by a foundation dedicated to the preservation of the landscape and its cultural heritage.
The view from the top of the Feldstein stairs looking across the Sauerland landscape.
Wear sturdy, non-slip hiking boots as the paths around the formations are uneven and can be slippery.
Bring binoculars to spot the peregrine falcons nesting on the rock faces.
Utilize the information boards at the trailhead to understand the historical layout of the prehistoric ramparts.
Do not attempt to climb the rock faces beyond the authorized stairs, as this damages the protected ecosystem and is dangerous.
The visitor center and site access may have limited hours during winter months; check the foundation website for seasonal restrictions.
Stay strictly on designated trails to protect the fragile lichen and nesting bird habitats; climbing on the rocks outside of designated stairs is prohibited.
