In the third day I decided to go back to the same location I have gone in day 1. As I had in my mind mainly to notice the metallic disks the first time, I thought to go back to check if there are any arrows or other symbols I missed.
I only found a big one, I have not seen the first time. I started with 11 snaps. Attached are the 4, I edit. The best are the last two.