these are all within four meters of one another

a paving stone with a curved arrow pointing right stamped into it

a paving stone with a six-pointed star (and a circle in the middle) stamped into it

a paving stone with the word "ich" stamped into it

a paving stone with an Andy Goldsworthyan snake/river stamped into it

a paving stone with a geometric design of a square within a square within a square within a square where each square has been rotated 90 degrees