The Mysterious Rock Walls of Rockwall, Texas

Simon H. asks: What civilization made the rock walls in Rockwall Texas? Manmade or a natural feature, the miles of seemingly neatly stacked, often-buried stone that sometimes reach 40 feet in height and transverse above and below the ground of Rockwall County, Texas are intriguing. Unfortunately for those who love to read up on ancient civilizations, on the whole the […]
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