Halver Hülloch cave nature reserve

The Halver Hülloch cave nature reserve (NSG) covers an area of 6.6 hectares to the east of the hamlet of Löhbach in the town of Halver. The area was designated as a nature reserve by the Arnsberg district government in 2004 and is also subject to the Habitats Directive (flora, fauna, habitat) in some areas. The area consists of the Hülloch cave, which is not open to tourists, and the surrounding forest area. The cave, located in a limestone lens of the lower Middle Devonian, is branched into several passages with a total length of 655 meters.

The cave contains dripstone decorations, cave waters, clear traces of iron ore mining and mined or extended cavities with numerous boreholes. There is occasional drip water in the upper main passages and groundwater channels in the lowest level of the cave. The blocked cave entrance is located in a former quarry as part of a large mining pingen field surrounded by a limestone Buchenwald. The cave serves as winter quarters for bats (greater mouse-eared bat), amphibians and insects.

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