There are 100,000s of miles of mortarless stacked Stone Walls all through Connecticut, NY state, Massachussets, Rhode Island, and much less in New Hampshire. Its a southern New England phenomena and into NY state.

I have many photos I have taken that show 90 degree angle turns in these walls, and where some of the stone walls were actually (built? Or converted) into pathways covered with soil, to create a raised road.

The sheer volume of work would take a few centuries at least...

Dating Mud Flood and why it couldnt have been recent within 150/200 years (NEW ENGLAND stone walls)...