Bordelumer Heide und Langenhorner Heide mit Umgebung, Nature reserve in Bordelum and Langenhorn, Germany

Bordelumer and Langenhorner Heide are two connected protected areas in northern Schleswig-Holstein featuring open heathland, moorland, and scattered ponds. The landscape includes both drier sandy areas and wetter zones with vegetation typical of moorland ecosystems.

The earliest protection for this area came in 1938 when Bordelumer Heide was designated as a nature reserve. A redesignation and expansion occurred in 1991, creating the current protected area with updated management approaches.

The heath is crossed by a circular trail with information boards and a Heath Educational Path (Heidelehrpfad). The Danish name Dørpumhede is still used for the eastern part, recalling the period before 1864 when the area belonged to the Bordelum and Langenhorn parishes in Nørre Gøs Herred.

The area is best explored on foot or by bicycle, with several walking paths crossing the open landscape. A nearby observation hill provides good views across the entire protected zone and helps orient visitors.

The reserve's ponds were dug for fish farming and are no longer managed; ringed by reeds, they now serve as breeding water for amphibians and dragonflies. The large moor dragonfly and the green mosaic darner are among the species recorded here.