Achnabreac Cup and Rings

I love that no one really knows what these are about
This picture shows the cup and ring marks on rocks in Achnabreac Forest, Argyll.
It’s known the symbols date back to the late Neolithic and early Bronze Age. Initially the carvings were found on boulders and outcrops of rock overlooking major routes, hunting grounds, water-holes and hunting spots.
This suggests a link with herding or hunting wild animals, although the presence on hillsides may indicate that they mark out boundaries between farmland and wild ground - perhaps an association with territorial ownership.
Later on, many boulders were incorporated into burials and cairns where they separate boundaries between sacred areas
(Forrestry Commission)