The third and final part of a project dealing with new interpretations of rock carvings based on technical analysis. A number of rock carvings with technical motifs have been misinterpreted. Perspectives have been misunderstood, mechanisms that are actually clearly shown have not been understood, and tools and their role in the motifs have not always been understood. A motif with an unusually large number of technical details is studied particularly closely. Many of the details have not been observed before. The motif is about manufacturing. A new category of rock carvings begins to emerge, carvings that deal with manufacturing. In parallel with the examination of the technical motifs, slightly less technical motifs have also been studied, documented and given alternative interpretations. The new interpretations can be compared with the traditional ones. For some motifs, it is clear that the new interpretations are better supported if one looks primarily at the function of the objects. Many objects on the rock carvings are easy to identify because they appear in graves or are discovered as soil finds. This does not apply to all objects. Some can be difficult to explain because they are made of perishable materials. One such object with great symbolic value has been puzzling. The symbol appears in only one place in Central Europe and has been interpreted there. This interpretation could also apply to the corresponding symbol on the rock carvings.