yes^ amazing how precise they were and it's everywhere in the midwest; mounds, cities & monuments at certain latitudes, angles. also interesting that our First President was a master surveryor & freemason; started his career at age seventeen;

https://www.mountvernon.org/library/digitalhistory/digital-encyclopedia/article/surveying/

"Washington's career as a professional surveyor began in 1749. He received a commission from the College of William and Mary to become surveyor for the newly formed Culpeper County. Washington immediately traveled to Culpeper, the county seat, to be sworn in. Washington completed his first survey within two days, measuring a tract of 400 acres. At seventeen years of age, he was well on his way to a lucrative career."