Hohenzollerischer Jakobsweg
Hirrlingen-Lake Constance
A route under development, from Hirrlingen near Rottenburg past the Hohenzollern castle and through the Killer valley via Burladingen, Sigmaringen, Pfullendorf to Überlingen on Lake Constance.
See Wolfgang Meyer's site for more details. The Jakobus-Bruderschaft Killer site has details for the 1st section of the route.