To mark the highest point on the Heidbrink a five-ton sandstone block with strong iron deposits, typical of the local Wiehen Hills, was set up on 24 May 2008. According to information boards by the TERRA.vita Nature Park, members of the Lübbecke marketing association (Stadtmarketingverein) and the municipal curator of Hüllhorst have marked the route to the highest stone with their own symbol. These are sometimes signposts, sometimes coloured markings, on wayside tree trunks. The symbol, the letter H on a hill symbol, is meant to be linked with the name and the appearance of the hill.