@ Andreas + Horst (I've finished): take a look at today's (Sunday, April 25th, 2021) hike of "Manuela from the Westerwald", which is near Nister, where the bear is in the forest just hit such a cross, to which an explanation of the individual symbols is attached. In addition, an email address: Aunt.Clara.Ja@gmail.com, under which you can get more information.