This discovery will be made thanks to Sandra, host of the Meetup group "Balade et photography Paris", and above all very friendly (shh, you shouldn't tell her because she's going to get a big head).
This walk started at the Metro National with already a dozen frescoes, unfortunately not always visible in their entirety with the trees. I had forgotten the chainsaw to deal with this eventuality...

We ended up in the area called "Spot 13" which will be the subject of the next report because there are many magnificent Graffs.