Reißinsel, Nature reserve on Rhine River island in Mannheim, Germany.
Reißinsel is a nature reserve on a Rhine island near Mannheim that protects an expansive floodplain forest. The area contains silver willows, oaks, ash trees, and hornbeams growing in distinct layers that create varied habitats for wildlife.
Industrialist Carl Reiß purchased the peninsula in 1881 originally for clay mining operations. He later transferred the land to Mannheim residents as a recreational area, which eventually became today's protected reserve.
The site functions as an outdoor classroom where visitors discover how floodplain forests support wildlife and plant life. Local groups use the space to experience the relationship between people and natural ecosystems.
A circular walking trail of about 4 kilometers guides visitors through the forest, though access is restricted from March to June during bird breeding season. Visitors should wear sturdy footwear and weather-appropriate clothing since the forest floor can be damp and muddy.
The northern section holds Bannwald status, meaning forestry is prohibited and natural processes shape the ecosystem without human intervention. This undisturbed zone allows rare animal species to find habitats that are increasingly scarce elsewhere.
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