I’m new on here, so apologies if my suggestion is outdated. To me, cup and ring marks suggest a sort of spiritual tally system. The cups would represent the individual, the carver, and the rings would indicate how many times some key event have taken place - a ritual, or a pilgrimage perhaps. The lines cutting through might represent genealogy, I.e. from the original mark-maker to their next descendent, or to someone who has replaced their function, like a subsequent priest. Or the lines might represent a completion, e.g. completion of their life, or their tenure. The way that some rings stop at the edge of other rings might suggest that rings were added over a period of time, I.e. they experienced more events than they anticipated when they started their marks.now that we believe that pilgrimages were carried out to important locations like Stonehenge, would this ring-tallying be a good explanation for cup and ring marks? What do you think?