Grube Cox, Nature reserve in Bergisch Gladbach, Germany.
The 22.3-hectare protected area contains four deep lakes with greenish-blue waters, surrounded by rocky slopes and deciduous forest zones.
Established in 1996, this former dolomite quarry operated from 1969 to 1985, providing materials for mirror glass production in Cologne-Porz.
The reserve serves as an educational site with information boards explaining the transformation from industrial quarry to natural habitat.
Visitors can explore the area through a marked circular trail with red-topped oak fence posts and designated observation points.
The nutrient-poor waters and heat-favored pioneer sites support rare species typically found in river floodplains, including kingfishers and grass snakes.
Location: Bergisch Gladbach
Inception: 1995
GPS coordinates: 50.97444,7.14806
Latest update: March 3, 2025 00:07
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