Did You Know that there is a mysterious, huge and extremely ancient archeological site that is mostly underground in Rockwall, Texas, just east of Dallas. In fact it is what the town was named for. Three of the early settlers of that area were friends and were helping each other to dig wells on their new land. As they were digging they ran into something very hard that blocked their way. Upon further investigation and digging they uncovered a portion of a rock wall that was entirely covered by the layers of soil. There are stories that say they continued digging and found underground rooms and corridors I'm not sure about that. However, over the years as Rockwall was settled more and more well diggers ran into the wall. At some point a prominent well digger consulted with all of the other well diggers he knew and was able to plot a rough map of the location and extent of the wall. Amazingly it was plotted to be a huge rectangle approximately 3.5 miles by 5.6 miles or 20