rock wall system

This is the system of continuous buried walls overlaid on map of Rockwall County by John Lindsey. In contrast to previous maps of wall locations, such as that of Kelsey and Denton, this map shows a continuous wall forming a slightly irregular rectangle. John Lindsey confirmed this by physically walking the perimeter formed by the walls with a metal probe. There are, however, gaps in the control points along the Eastern section which he was unable to access.