MIAMI, FLORIDA—Over the past six months, archaeologist Bob Carr and his team have uncovered a 2,000-year-old Tequesta village site consisting of eight large circles of postholes carved into the limestone, and lines of postholes that may represent boardwalks connecting the dwellings, across the Miami River from the so-called Miami Circle, another set of postholes thought to have been a Tequesta council house or ceremonial structure. A Tequesta burial ground has also been found nearby. “It’s one of the earliest urban plans in eastern North America. You can actually see this extraordinary configuration of these buildings and structures,” Carr said. Preservationists argue that the site, which is located in a known archaeological zone, could earn National Historic Landmark status, or even qualify as a UNESCO World Heritage site.