The numbers of the strongpoints here have been changed during the war.
We think that this area, noted on the IGN map with the title above, had several strongpoints:
1. Wn 114, Bochum is a small radar site with light constructions at the coast.
2. Stp 115, Wuppertal with the 612 lies on the high ridge, 500 m south.
Just a detail.