Ground-penetrating radar image of the Neolithic enclosure in Chleby, Czech Republic CHLEBY, CZECH REPUBLIC—A monumental structure built some 6,500 years ago has been identified as one of the oldest ritual centers in central Europe, according to a La Brújula Verde report. Located in the central Czech Republic, the circular enclosure measures more than 750 feet in diameter and features a ditch more than eight feet deep. Twelve openings in the peri…