According to a Newsweek report, a 2,600-year-old burial chamber has been discovered in an area of southwestern Germany once occupied by Celts. The chamber, which was lined with oak timbers, was found in a large burial mound on the plains of the Danube River. A wooden club-like object in the tomb is thought to have been left behind by a builder. The mound measures more than 210 feet in diameter, and stands more than six feet tall, although Andrea Lindlohr of the Baden-Württemberg Ministry for Regional Development and Housing said that it may have once been 20 feet tall. "The...