Northern Harz Boundary Fault
The Northern Harz Boundary Fault (German: Harznordrandstörung or Harznordrandverwerfung) is a geological fault where the Harz Block, which consists of rocks formed during the Palaeozoic Era and folded in the course of Hercynian mountain building, borders on the Subhercynian Basin or Harz Foreland. The fault is also known in English as the Harz North Rim Fault or Harznordrand Thrust (Fault).
Source: Wikipedia — Northern Harz Boundary Fault (CC BY-SA 4.0)