Archaeologist Eilat Mazar has made another discovery confirming the Biblical record. A portion of the remnants of ancient walls that once surrounded Jerusalem were previously dated to the Hasmonean period (2nd century B.C.), but new evidence discovered by Dr. Mazar has led her to re-date the wall to the mid 5th century B.C. and identify it as a portion of the wall that Nehemiah built to protect the Jews who returned to Jerusalem after their captivity in Babylon.