Maintaining Our Landmarks

Remove not the ancient landmark, which thy fathers have set. Proverbs 22:28 You may have seen a man alongside a highway or on some land nearby, perhaps with his baseball cap on backwards, peering into the scope of a survey instrument set atop a tripod. At some significant distance away, there would have been another man, holding up a long stick and moving from place to place on a piece of land according to the hand signals or two-way radio commands of the man behind the survey instrument....