A ten foot stretch of zigzag stone row (More Squiggles), suggests a construction style of three serpentine rows...
3 views of perhaps a mortar stone? Notice the wedges?
Notice anything that reminds you of a quartz head and a right front foot of a certain animal?
A couple places I've been this autumn are like this, these circular rock piles: Turtles in the Round Mounds & Pile by a stone row .